[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3ed7npfu1gvg2":3},{"id":4,"title":5,"description":6,"category":7,"contentHtml":8,"date":9,"createdAt":10,"updatedAt":11},"b54b91e0-adc1-4333-9190-66e28f7b7b19","Distributed Sockets","A practical guide to scaling WebSocket systems beyond a single server using Go, Redis, and RabbitMQ. It walks through designing a distributed architecture, implementing message routing across servers, and handling real-time communication reliably with clean abstractions and optimizations.","backend development","\u003Ch2>The Problem\u003C\u002Fh2>\n\u003Cp>With a single server, WebSocket messaging is straightforward. You keep a map of connections, someone sends a message, you look up the recipient in the map, and write to their connection. Done.\u003C\u002Fp>\n\u003Cp>But the moment you have multiple server instances (for load balancing, high availability, or just because your app got popular), you have a problem: Server 1 does not know about connections on Server 2. A message sent from a user on Server 1 to a user on Server 2 will just... disappear into the void.\u003C\u002Fp>\n\u003Ch2>The Solution\u003C\u002Fh2>\n\u003Cp>The architecture is pretty simple once you see it:\u003C\u002Fp>\n\u003Col>\n\u003Cli>\n\u003Cp>\u003Cstrong>Redis\u003C\u002Fstrong> acts as a shared registry. When a user connects to any server, we store \u003Ccode>userID -> serverID\u003C\u002Fcode> in Redis. Now every server can look up where any user is connected.\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp>\u003Cstrong>RabbitMQ\u003C\u002Fstrong> (with topic exchange) handles message routing between servers. Each server subscribes to its own routing key (\u003Ccode>server.{serverID}\u003C\u002Fcode>). When Server 1 needs to send a message to a user on Server 2, it publishes to RabbitMQ with the routing key \u003Ccode>server.server-2\u003C\u002Fcode>. Server 2 picks it up and delivers locally.\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp>\u003Cstrong>Local optimization\u003C\u002Fstrong>: If both users happen to be on the same server, we skip Redis and RabbitMQ entirely and deliver the message directly.\u003C\u002Fp>\n\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Cp>Here is the flow visually:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"plaintext\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"plaintext\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan>User A (Server 1) sends message to User B (Server 2)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>1. Server 1 checks: is User B connected locally? No.\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>2. Server 1 asks Redis: where is User B? -> \"server-2\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>3. Server 1 publishes to RabbitMQ: key=\"server.server-2\", body=message\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>4. Server 2 receives from RabbitMQ (subscribed to \"server.server-2\")\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>5. Server 2 finds User B in local connections, writes to their WebSocket\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Ch2>Project Structure\u003C\u002Fh2>\n\u003Cp>Before we get into the code, here is how I organized the project:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"plaintext\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"plaintext\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan>cmd\u002F\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  main.go              - Entry point, wiring everything together\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  api\u002F                 - HTTP routes\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  ws\u002F                  - WebSocket handler and message routing logic\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>config\u002F\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  cache\u002F               - Redis client initialization\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>internal\u002F\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  adapter\u002F             - Implementations of domain interfaces\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>    cache\u002F             - Redis adapter\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>    queue\u002F             - RabbitMQ adapter\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  domain\u002F\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>    cache\u002F             - Cache interface definition\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>    queue\u002F             - Queue interface and types\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  service\u002F             - Business logic layer\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>pkg\u002F\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  env\u002F                 - Environment variable loading\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan>  util\u002F                - Helpers (server ID, panic on error)\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>I used a clean architecture style where the domain layer defines interfaces and the adapter layer implements them. This way the WebSocket handler does not care whether the queue is RabbitMQ, Kafka, or carrier pigeons. It just calls \u003Ccode>Emit()\u003C\u002Fcode> and \u003Ccode>Recieve()\u003C\u002Fcode>.\u003C\u002Fp>\n\u003Ch2>Step 1: Setting Up the Infrastructure\u003C\u002Fh2>\n\u003Cp>First things first. We need Redis and RabbitMQ running. I used Docker Compose for this:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"yaml\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"yaml\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">version\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"3.9\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">services\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">  redis\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    image\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">redis:8-alpine\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    container_name\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">app_redis\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    restart\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">unless-stopped\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    ports\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"6379:6379\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    volumes\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">redis_data:\u002Fdata\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    command\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">redis-server --appendonly yes --requirepass ${REDIS_PASSWORD:-secret}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    healthcheck\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      test\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: [\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"CMD\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"redis-cli\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"-a\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"${REDIS_PASSWORD:-secret}\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"ping\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">]\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      interval\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">10s\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      timeout\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">5s\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      retries\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">5\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    networks\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">app_network\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">  rabbitmq\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    image\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">rabbitmq:4-management-alpine\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    container_name\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">app_rabbitmq\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    restart\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">unless-stopped\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    ports\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"5672:5672\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"15672:15672\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    environment\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      RABBITMQ_DEFAULT_USER\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">${RABBITMQ_USER:-admin}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      RABBITMQ_DEFAULT_PASS\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">${RABBITMQ_PASSWORD:-secret}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      RABBITMQ_DEFAULT_VHOST\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">${RABBITMQ_VHOST:-\u002F}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    volumes\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">rabbitmq_data:\u002Fvar\u002Flib\u002Frabbitmq\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    healthcheck\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      test\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: [\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"CMD\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"rabbitmq-diagnostics\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"ping\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">]\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      interval\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">10s\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      timeout\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">5s\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">      retries\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">5\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    networks\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">      - \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">app_network\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">volumes\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">  redis_data\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">  rabbitmq_data\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">networks\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">  app_network\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">:\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#22863A\">    driver\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">bridge\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Spin it up with:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"bash\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"bash\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">docker\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> compose\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> up\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> redis\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> rabbitmq\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#005CC5\"> -d\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>RabbitMQ management UI will be at \u003Ccode>http:\u002F\u002Flocalhost:15672\u003C\u002Fcode> (guest\u002Fguest by default). It is super useful for debugging when you are trying to figure out why your messages are not showing up.\u003C\u002Fp>\n\u003Ch2>Step 2: Defining the Domain Interfaces\u003C\u002Fh2>\n\u003Cp>I like to define my interfaces first so I know exactly what capabilities I need before I write any implementation. For the cache (Redis):\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> cache\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">time\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tSet\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">value\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ttl\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> time\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Duration\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tGet\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) ([]\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tDelete\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Simple. Set a key, get a key, delete a key. That is all we need from Redis for this use case.\u003C\u002Fp>\n\u003Cp>For the queue (RabbitMQ), there is a bit more going on. First the types:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tamqp \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Frabbitmq\u002Famqp091-go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tName       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tKind       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tDurable    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tAutoDelete \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tInternal   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tNoWait     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tArgs       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Table\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tName       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tDurable    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tAutoDelete \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tExclusive  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tNoWait     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tArgs       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Table\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueBind\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tName     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tKey      []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tExchange \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tNoWait   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tArgs     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Table\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Consume\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tQueue     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tConsumer  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tAutoAck   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tExclusive \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tNoLocal   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tNoWait    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tArgs      \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Table\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Publish\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tCtx       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tExchange  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tKey       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tMandatory \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tImmediate \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tMsg       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Publishing\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>And the interface itself:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> amqp \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Frabbitmq\u002Famqp091-go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> MessageHandler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">body\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">mainMsg\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Delivery\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tEmit\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">exchangeConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">publishConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Publish\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tRecieve\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">exchangeConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">queueDeclareConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">queueBindConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueBind\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">consumerConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Consume\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">handler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> MessageHandler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Notice the \u003Ccode>MessageHandler\u003C\u002Fcode> type. This is the callback that gets called for every message the consumer receives. The handler gets both the message body and the raw \u003Ccode>amqp.Delivery\u003C\u002Fcode> so it can Ack or Nack the message.\u003C\u002Fp>\n\u003Ch2>Step 3: Implementing the Adapters\u003C\u002Fh2>\n\u003Ch3>Cache Adapter (Redis)\u003C\u002Fh3>\n\u003Cp>The Redis adapter is about as simple as it gets:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> cache\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">time\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fgo-redis\u002Fredis\u002Fv8\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fdomain\u002Fcache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tclient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">redis\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Client\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> NewCacheClient\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">client\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">redis\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Client\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> &\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tclient: client,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">c \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Set\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">value\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ttl\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> time\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Duration\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> c.client.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Set\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(ctx, key, value, ttl).\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Err\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">c \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Get\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) ([]\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tval, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> c.client.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Get\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(ctx, key).\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Result\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(val), err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">c \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Delete\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">key\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t_, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> c.client.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Del\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(ctx, key).\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Result\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Ch3>Queue Adapter (RabbitMQ)\u003C\u002Fh3>\n\u003Cp>This one is more involved. The \u003Ccode>Emit\u003C\u002Fcode> method declares the exchange and publishes a message. The \u003Ccode>Recieve\u003C\u002Fcode> method declares the exchange, creates a queue, binds it with routing keys, and starts consuming in a goroutine:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">fmt\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">log\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tamqp \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Frabbitmq\u002Famqp091-go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fdomain\u002Fqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tConn    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Connection\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tChannel \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Channel\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> NewQueueClient\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">conn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Connection\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">channel\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Channel\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> &\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tConn:    conn,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tChannel: channel,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">q \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Emit\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">exchangeConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">publishConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Publish\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Name,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Kind,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Durable,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.AutoDelete,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Internal,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.NoWait,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Args,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">PublishWithContext\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Ctx,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Exchange,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Key,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Mandatory,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Immediate,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tpublishConfig.Msg,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">q \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Recieve\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">exchangeConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">queueDeclareConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">queueBindConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueBind\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">consumerConfig\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Consume\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">handler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">MessageHandler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Name,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Kind,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Durable,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.AutoDelete,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Internal,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.NoWait,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\texchangeConfig.Args,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tdeclaredQueue, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.Name,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.Durable,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.AutoDelete,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.Exclusive,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.NoWait,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueDeclareConfig.Args,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> len\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(queueBindConfig.Key) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"><\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\"> 1\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> fmt.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Errorf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Queue bind key []string cannot be lesser than 1\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tfor\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> _, key \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> range\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueBindConfig.Key {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueBind\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tdeclaredQueue.Name,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tkey,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tqueueBindConfig.Exchange,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tqueueBindConfig.NoWait,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tqueueBindConfig.Args,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tmsgs, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q.Channel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Consume\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tdeclaredQueue.Name,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.Consumer,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.AutoAck,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.Exclusive,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.NoLocal,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.NoWait,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconsumerConfig.Args,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tgo\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\tfor\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> msg \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> range\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> msgs {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> handler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(msg.Body, msg); err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Printf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Error handling message: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%v\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>A few things to note:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>The queue is declared with \u003Ccode>Exclusive: true\u003C\u002Fcode>, meaning it is tied to this connection and will be auto-deleted when the server disconnects. This is exactly what we want because each server instance should have its own ephemeral queue.\u003C\u002Fli>\n\u003Cli>The binding key is a slice of strings because you might want a server to listen on multiple routing keys.\u003C\u002Fli>\n\u003Cli>The consumer runs in a goroutine so it does not block the main thread.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>Step 4: The WebSocket Handler\u003C\u002Fh2>\n\u003Cp>This is where the magic happens. The \u003Ccode>ws\u003C\u002Fcode> package manages local connections, handles incoming messages, and bridges everything together.\u003C\u002Fp>\n\u003Ch3>Connection Management\u003C\u002Fh3>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> ws\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">encoding\u002Fjson\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">log\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">net\u002Fhttp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">sync\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tamqp \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Frabbitmq\u002Famqp091-go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fgin-gonic\u002Fgin\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fgorilla\u002Fwebsocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fdomain\u002Fcache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fdomain\u002Fqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fpkg\u002Fresponse\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> upgrader \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> websocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Upgrader\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tCheckOrigin: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">r\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">http\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Request\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">bool\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\"> true\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> clients \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> make\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">map\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">[\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">]\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">*\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">websocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Conn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> mutex \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> &\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">sync\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Mutex\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> cacheClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> serverID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>The \u003Ccode>clients\u003C\u002Fcode> map is keyed by \u003Ccode>userID\u003C\u002Fcode> instead of the raw connection. This way we can look up a user's connection by their ID when we need to deliver a message.\u003C\u002Fp>\n\u003Ch3>Initialization\u003C\u002Fh3>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> Socket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">r\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">gin\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Engine\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> cache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">q\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Interface\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">sID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tcacheClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> cache\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tqueueClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> q\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tserverID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> sID\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tr.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">GET\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u002Fws\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, wsHandler)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\tstartConsumer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>We register the WebSocket route and immediately start the RabbitMQ consumer. The consumer starts listening for messages destined for this server right away.\u003C\u002Fp>\n\u003Ch3>Handling New Connections\u003C\u002Fh3>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> wsHandler\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">ctx\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">gin\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Context\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tuserID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> ctx.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Query\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"user_id\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> userID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">==\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> \"\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tresponse\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ErrorResponse\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tStatusCode: http.StatusBadRequest,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tMessage:    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"user_id required\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t}.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Send\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(ctx)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tconn, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> upgrader.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Upgrade\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(ctx.Writer, ctx.Request, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Error upgrading connection: \"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Lock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tclients[userID] \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> conn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unlock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tcacheClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Set\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(context.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Background\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(), \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"user:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">+\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">userID, []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(serverID), \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">0\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Printf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"User \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> connected on server \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#005CC5\">\\n\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, userID, serverID)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tgo\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> handleConnection\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(userID, conn)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>When a user connects, three things happen:\u003C\u002Fp>\n\u003Col>\n\u003Cli>We store their connection in the local \u003Ccode>clients\u003C\u002Fcode> map\u003C\u002Fli>\n\u003Cli>We store \u003Ccode>user:{userID} -> serverID\u003C\u002Fcode> in Redis so other servers can find them\u003C\u002Fli>\n\u003Cli>We start a goroutine to read messages from their connection\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Ch3>Handling Disconnects\u003C\u002Fh3>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> handleConnection\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">userID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">conn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> *\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">websocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Conn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tdefer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Close\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Lock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tdelete\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(clients, userID)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unlock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tcacheClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Delete\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(context.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Background\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(), \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"user:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">+\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">userID)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tfor\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t_, message, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> conn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ReadMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\tbreak\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\thandleIncomingMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(userID, message)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>When the connection breaks (user closes tab, network dies, whatever), the deferred function cleans up: closes the WebSocket, removes from the local map, and deletes the Redis entry. Now other servers will not try to route messages to a dead connection.\u003C\u002Fp>\n\u003Ch3>Routing Messages\u003C\u002Fh3>\n\u003Cp>This is the core logic. When a user sends a message, we need to figure out where the recipient is and get the message there:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> IncomingMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tTo   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> `json:\"to\"`\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tBody \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> `json:\"body\"`\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">type\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> struct\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tFrom \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> `json:\"from\"`\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tTo   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> `json:\"to\"`\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tBody \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> `json:\"body\"`\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> handleIncomingMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">fromUserID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">raw\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tvar\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> msg \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">IncomingMessage\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> json.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unmarshal\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(raw, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">&\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">msg); err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Invalid handleIncomingMessage message format:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Lock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tconn, local \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> clients[msg.To]\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unlock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> local {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tqueueMsg \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{From: fromUserID, To: msg.To, Body: msg.Body}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tbody, _ \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> json.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Marshal\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(queueMsg)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tconn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">WriteMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(websocket.TextMessage, body)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\ttargetServerIDBytes, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> cacheClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Get\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(context.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Background\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(), \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"user:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">+\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">msg.To)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Printf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"User \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> not found online\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#005CC5\">\\n\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, msg.To)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\ttargetServerID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(targetServerIDBytes)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tqueueMsg \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> QueueMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{From: fromUserID, To: msg.To, Body: msg.Body}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tbody, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> json.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Marshal\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(queueMsg)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Failed to Marshall queueMsg:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Emit\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tName:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"messages\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tKind:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"topic\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tDurable:    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">true\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tAutoDelete: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tInternal:   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoWait:     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tArgs:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Publish\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tCtx:       context.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Background\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(),\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tExchange:  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"messages\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tKey:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"server.\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> +\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> targetServerID,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tMandatory: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tImmediate: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tMsg: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Publishing\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\tContentType: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"application\u002Fjson\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\tBody:        body,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Failed to emit message:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>The local shortcut is important. If both users are on the same server, there is zero reason to go through Redis lookup and RabbitMQ. Just deliver directly. Saves network hops and latency.\u003C\u002Fp>\n\u003Ch3>The Consumer (Receiving Messages from RabbitMQ)\u003C\u002Fh3>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> startConsumer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Recieve\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ExchangeDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tName:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"messages\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tKind:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"topic\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tDurable:    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">true\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tAutoDelete: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tInternal:   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoWait:     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tArgs:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueDeclare\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tName:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tDurable:    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">true\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tAutoDelete: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tExclusive:  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">true\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoWait:     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tArgs:       \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueBind\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tKey:      []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"server.\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> +\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> serverID},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tExchange: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"messages\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoWait:   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tArgs:     \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">\t\tqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Consume\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tConsumer:  \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tAutoAck:   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tExclusive: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoLocal:   \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tNoWait:    \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tArgs:      \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\tfunc\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">body\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> []\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">byte\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">mainMsg\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> amqp\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Delivery\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">error\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\tvar\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> msg \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">QueueMessage\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> json.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unmarshal\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(body, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">&\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">msg); err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\tmainMsg.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Nack\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Lock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tconn, exists \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> clients[msg.To]\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tmutex.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Unlock\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> exists {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\terr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> conn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">WriteMessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(websocket.TextMessage, body)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t\tmainMsg.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Ack\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Printf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"User \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> not found locally\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#005CC5\">\\n\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, msg.To)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t\tmainMsg.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Nack\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">false\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">true\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\t},\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> nil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Failed to start consumer:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, err)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Each server binds to its own routing key: \u003Ccode>server.{serverID}\u003C\u002Fcode>. When a message arrives, the handler looks up the target user in the local connections map and writes to their WebSocket.\u003C\u002Fp>\n\u003Cp>I set \u003Ccode>AutoAck: false\u003C\u002Fcode> so we manually acknowledge messages. If the user is found locally, we Ack. If not (maybe they disconnected between the Redis lookup and delivery), we Nack with \u003Ccode>requeue: true\u003C\u002Fcode> so RabbitMQ can try again or another consumer can pick it up.\u003C\u002Fp>\n\u003Ch2>Step 5: Wiring It All Together\u003C\u002Fh2>\n\u003Cp>The \u003Ccode>main.go\u003C\u002Fcode> ties everything together:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> main\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">fmt\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">log\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tamqp \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Frabbitmq\u002Famqp091-go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fcmd\u002Fapi\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fcmd\u002Fws\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fconfig\u002Fcache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fadapter\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fadapter\u002Fqueue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Finternal\u002Fservice\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fpkg\u002Fenv\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\t\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">github.com\u002Fumohsamuel\u002Fdistributed-sockets\u002Fpkg\u002Futil\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">var\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tenvironmentVariables \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> env.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">LoadEnvironment\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tserverID             \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> init\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tserverID \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> util.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">GetServerID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tlog.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Println\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Server ID:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, serverID)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> main\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tcacheClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> cache.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">NewCache\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(environmentVariables)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tdefer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> cacheClient.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Close\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tqueueConn, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> amqp.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Dial\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(fmt.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Sprintf\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"amqp:\u002F\u002Fguest:\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">@\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">%s\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\u002F\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, environmentVariables.RabbitMQ.RABBITMQ_PASSWORD, environmentVariables.RabbitMQ.RABBITMQ_ADDR))\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tutil.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">FailOnError\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(err, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Failed to connect to RabbitMQ\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tdefer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueConn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Close\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tqueueChannel, err \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueConn.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Channel\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tutil.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">FailOnError\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(err, \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Failed to open a RabbitMQ channel\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tdefer\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> queueChannel.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Close\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tqueueClient \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> &\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Queue\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tConn:    queueConn,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tChannel: queueChannel,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tadapterDependencies \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> adapter\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">AdapterDependencies\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tEnvironmentVariables: environmentVariables,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tCacheClient:          cacheClient,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tQueueClient:          queueClient,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tadapters \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> adapter.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">NewAdapter\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(adapterDependencies)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tserviceDependencies \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> service\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">ServiceDependencies\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t\tAdapter: adapters,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tservices \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> service.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">NewService\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(serviceDependencies)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tr \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> api.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">API\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(services, environmentVariables)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tws.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Socket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(r.Engine, adapters.CacheImplementation, adapters.QueueImplementation, serverID)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tr.Engine.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Run\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(environmentVariables.Port)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Each server gets a unique ID via the \u003Ccode>SERVER_ID\u003C\u002Fcode> environment variable (or falls back to the machine hostname):\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"go\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"go\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">package\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> util\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">import\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> \"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">os\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\"> \u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">func\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> GetServerID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">() \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">string\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\tid \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> os.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Getenv\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"SERVER_ID\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">)\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\tif\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> id \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">!=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> \"\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> {\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\t\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> id\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\t}\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">\thostname, _ \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">:=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> os.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">Hostname\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">()\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">\treturn\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> hostname\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Ch2>Step 6: Testing It\u003C\u002Fh2>\n\u003Cp>To actually see the distribution working, you need to run multiple server instances. Start Redis and RabbitMQ, then open two terminals.\u003C\u002Fp>\n\u003Cp>Terminal 1:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"bash\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"bash\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">SERVER_ID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">server-1\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> PORT\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">:8080\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> run\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> cmd\u002Fmain.go\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Terminal 2:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"bash\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"bash\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">SERVER_ID\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">server-2\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> PORT\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">:8081\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> go\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> run\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\"> cmd\u002Fmain.go\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Now connect WebSocket clients to different servers. Open a browser console and connect as \"alice\" on server-1:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"javascript\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"javascript\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">const\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> ws\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> =\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> new\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> WebSocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"ws:\u002F\u002Flocalhost:8080\u002Fws?user_id=alice\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">);\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">ws.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">onmessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> =\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">e\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=>\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> console.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">log\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Received:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, e.data);\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>In another tab, connect as \"bob\" on server-2:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"javascript\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"javascript\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">const\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\"> ws\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> =\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> new\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\"> WebSocket\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"ws:\u002F\u002Flocalhost:8081\u002Fws?user_id=bob\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">);\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">ws.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">onmessage\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\"> =\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> (\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#E36209\">e\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">) \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#A0A0A0;--shiki-light:#D73A49\">=>\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\"> console.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">log\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"Received:\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">, e.data);\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>Now send a message from alice to bob:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"javascript\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"javascript\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">ws.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">send\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">(\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#005CC5\">  JSON\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">.\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#6F42C1\">stringify\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">({\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">    to: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"bob\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">    body: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"hey bob, can you hear me across servers?\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">  })\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">);\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>And bob receives:\u003C\u002Fp>\n\u003Cfigure data-rehype-pretty-code-figure=\"\">\u003Cpre tabindex=\"0\" data-language=\"json\" data-theme=\"vesper github-light\">\u003Ccode data-language=\"json\" data-theme=\"vesper github-light\" style=\"display: grid;\">\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">{\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">  \"from\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"alice\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">  \"to\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"bob\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">,\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFC799;--shiki-light:#005CC5\">  \"body\"\u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">: \u003C\u002Fspan>\u003Cspan style=\"--shiki-dark:#99FFE4;--shiki-light:#032F62\">\"hey bob, can you hear me across servers?\"\u003C\u002Fspan>\u003C\u002Fspan>\n\u003Cspan data-line=\"\">\u003Cspan style=\"--shiki-dark:#FFF;--shiki-light:#24292E\">}\u003C\u002Fspan>\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fpre>\u003C\u002Ffigure>\n\u003Cp>That message went from Alice's WebSocket, to Server 1, through Redis (lookup), through RabbitMQ (routing), to Server 2, and finally to Bob's WebSocket. Pretty cool.\u003C\u002Fp>\n\u003Ch2>Demo\u003C\u002Fh2>\n\u003Cp>Here is a video showing the whole thing in action with two server instances running side by side:\u003C\u002Fp>\n\u003Cp>\u003Cvideo src=\"https:\u002F\u002Fres.cloudinary.com\u002Fdb6nohcui\u002Fvideo\u002Fupload\u002Fv1777857204\u002Fdistributed-server_ghx1ne.mp4\" controls playsinline width=\"100%\">\u003C\u002Fvideo>\u003C\u002Fp>\n\u003Ch2>Gotchas I Ran Into\u003C\u002Fh2>\n\u003Cp>A few things that tripped me up while building this:\u003C\u002Fp>\n\u003Cp>\u003Cstrong>1. Exchange property mismatch.\u003C\u002Fstrong> If you declare an exchange as non-durable and then later change your code to durable, RabbitMQ will reject it with a \u003Ccode>PRECONDITION_FAILED\u003C\u002Fcode> error. You have to delete the old exchange in the management UI and let the app recreate it. Spent a good amount of time confused by this one.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>2. The \u003Ccode>set\u003C\u002Fcode> vs \u003Ccode>export\u003C\u002Fcode> thing on Windows.\u003C\u002Fstrong> If you are using Git Bash on Windows, \u003Ccode>set SERVER_ID=server-2\u003C\u002Fcode> does nothing. You need \u003Ccode>export\u003C\u002Fcode> or inline it: \u003Ccode>SERVER_ID=server-2 go run cmd\u002Fmain.go\u003C\u002Fcode>. I kept wondering why my second server was using the same ID.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>3. Redis hostname resolution.\u003C\u002Fstrong> When running the app locally but Redis in Docker, you cannot use \u003Ccode>redis\u003C\u002Fcode> as the hostname (that only works inside the Docker network). Use \u003Ccode>localhost\u003C\u002Fcode> instead. Obvious in hindsight but it got me.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>4. Nacking to the right place.\u003C\u002Fstrong> In the consumer, if a user disconnects between the time we looked them up in Redis and the time we try to deliver, the message gets Nacked with requeue. This prevents message loss during that race condition window.\u003C\u002Fp>\n\u003Ch2>Where to Go From Here\u003C\u002Fh2>\n\u003Cp>This is a solid foundation, but there are plenty of things you could add (nothing really, \"shes perfect\"):\u003C\u002Fp>\n\u003Cul>\n\u003Cli>\u003Cstrong>Authentication\u003C\u002Fstrong>: Right now we just trust the \u003Ccode>user_id\u003C\u002Fcode> query param. In production you would validate a JWT or session token.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>Message persistence\u003C\u002Fstrong>: If a user is offline, messages are lost. You could store them in a database and deliver when they reconnect.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>Presence system\u003C\u002Fstrong>: Use Redis pub\u002Fsub or expiring keys to track online\u002Foffline status.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>Multiple message types\u003C\u002Fstrong>: Add a \u003Ccode>type\u003C\u002Fcode> field to messages and route \u003Ccode>chat\u003C\u002Fcode>, \u003Ccode>typing\u003C\u002Fcode>, \u003Ccode>notification\u003C\u002Fcode> etc. differently.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch2>Final Thoughts\u003C\u002Fh2>\n\u003Cp>The core idea is honestly pretty simple: use a shared registry (Redis) to know where everyone is, and a message broker (RabbitMQ) to route between servers. The WebSocket part is almost unchanged from a single-server implementation. You just replace the local broadcast channel with a publish to RabbitMQ, and add a consumer that delivers to local connections.\u003C\u002Fp>\n\u003Cp>Here's a link to the code on Github \u003Ca href=\"https:\u002F\u002Fgithub.com\u002Fumohsamuel\u002Fdistributed-sockets\">umohsamuel\u002Fdistributed-sockets\u003C\u002Fa>, if you want to dig through it or run it yourself. Have fun with it.\u003C\u002Fp>","May 4, 2026","2026-05-04T15:06:22.773Z","2026-10-06T13:19:32.028Z"]