[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-en-1-1-all-go-event-driven-websocket-all--*":3,"academy-blog-translations-lkfwvdf86zteegl":154},{"data":4,"page":142,"perPage":142,"totalItems":142,"totalPages":142},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":148,"keywords":149,"locale":124,"published_at":150,"scheduled_at":13,"school_blog":146,"short_description":151,"slug":152,"status":144,"title":6,"updated":153,"updated_by":13,"views":147},"Ep.31 Go and Event-Driven WebSocket - Enhancing Flexibility","sclblg987654321","school_blog_translations","\u003Cp class=\"p1\">\u003Cstrong>Go and Event-Driven WebSocket - Enhancing Flexibility\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">In this episode, we will explore Event-Driven Architecture and how to adapt a WebSocket Server to support event-driven operations, making your system more flexible and easier to scale!\u003C\u002Fp>\u003Cp class=\"p4\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>What is Event-Driven Architecture?\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">Event-Driven Architecture is a design pattern that operates by sending and responding to events, such as button presses, new connections, or message deliveries.\u003C\u002Fp>\u003Cp class=\"p3\">Advantages of Event-Driven Architecture :\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">Flexibility : New features can be added without impacting other parts of the system.\u003C\u002Fli>\u003Cli class=\"li3\">Scalability : Breaking operations into events reduces redundant processing.\u003C\u002Fli>\u003Cli class=\"li3\">Ideal for WebSocket : Better manages real-time communication.\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p3\">Implementing Event-Driven in WebSocket\u003C\u002Fp>\u003Cp class=\"p3\">In a WebSocket Server, we can utilize Event-Driven design by :\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">Separating operations by events such as onConnect, onMessage, onDisconnect.\u003C\u002Fli>\u003Cli class=\"li3\">Using an Event Bus or Pub\u002FSub to distribute events within the system.\u003C\u002Fli>\u003Cli class=\"li3\">Adding handlers for managing each event. \u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p3\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Example of Event-Driven Operation on WebSocket\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">1. Define Event Structure\u003C\u002Fp>\u003Cp class=\"p3\">Name : Event name (e.g., message, disconnect).\u003C\u002Fp>\u003Cp class=\"p3\">Data : Information related to the event.\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">type Event struct {\n    Name string      `json:\"name\"`\n    Data interface{} `json:\"data\"`\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">2. Create Event Dispatcher\u003C\u002Fp>\u003Cp class=\"p3\">Register: Register events and handlers.\u003C\u002Fp>\u003Cp class=\"p3\">Dispatch: Distribute events to registered handlers.\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">package main\n\nimport \"sync\"\n\ntype EventHandler func(data interface{})\n\ntype EventDispatcher struct {\n    handlers map[string][]EventHandler\n    mu       sync.RWMutex\n}\n\nfunc NewEventDispatcher() *EventDispatcher {\n    return &EventDispatcher{handlers: make(map[string][]EventHandler)}\n}\n\nfunc (d *EventDispatcher) Register(event string, handler EventHandler) {\n    d.mu.Lock()\n    defer d.mu.Unlock()\n    d.handlers[event] = append(d.handlers[event], handler)\n}\n\nfunc (d *EventDispatcher) Dispatch(event string, data interface{}) {\n    d.mu.RLock()\n    defer d.mu.RUnlock()\n    if handlers, found := d.handlers[event]; found {\n        for _, handler := range handlers {\n            go handler(data) \u002F\u002F เรียกใช้ Handler แบบ Concurrent\n        }\n    }\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">3. Use Event Dispatcher in WebSocket\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">package main\r\n\r\nimport (\r\n    \"encoding\u002Fjson\"\r\n    \"log\"\r\n    \"net\u002Fhttp\"\r\n\r\n    \"github.com\u002Fgorilla\u002Fwebsocket\"\r\n)\r\n\r\nvar upgrader = websocket.Upgrader{\r\n    CheckOrigin: func(r *http.Request) bool {\r\n        return true\r\n    },\r\n}\r\n\r\nvar dispatcher = NewEventDispatcher()\r\n\r\nfunc handleConnections(w http.ResponseWriter, r *http.Request) {\r\n    conn, err := upgrader.Upgrade(w, r, nil)\r\n    if err != nil {\r\n        log.Println(\"Error upgrading connection:\", err)\r\n        return\r\n    }\r\n    defer conn.Close()\r\n\r\n    dispatcher.Dispatch(\"connect\", conn)\r\n\r\n    for {\r\n        _, msg, err := conn.ReadMessage()\r\n        if err != nil {\r\n            log.Println(\"Error reading message:\", err)\r\n            dispatcher.Dispatch(\"disconnect\", conn)\r\n            break\r\n        }\r\n\r\n        var event Event\r\n        if err := json.Unmarshal(msg, &event); err != nil {\r\n            log.Println(\"Error unmarshaling event:\", err)\r\n            continue\r\n        }\r\n\r\n        dispatcher.Dispatch(event.Name, event.Data)\r\n    }\r\n}\r\n\r\nfunc main() {\r\n    dispatcher.Register(\"connect\", func(data interface{}) {\r\n        conn := data.(*websocket.Conn)\r\n        log.Println(\"New client connected:\", conn.RemoteAddr())\r\n    })\r\n\r\n    dispatcher.Register(\"message\", func(data interface{}) {\r\n        log.Printf(\"Message received: %v\", data)\r\n    })\r\n\r\n    dispatcher.Register(\"disconnect\", func(data interface{}) {\r\n        conn := data.(*websocket.Conn)\r\n        log.Println(\"Client disconnected:\", conn.RemoteAddr())\r\n    })\r\n\r\n    http.HandleFunc(\"\u002Fws\", handleConnections)\r\n    log.Println(\"WebSocket server started at :8080\")\r\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\r\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Code Explanation\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">EventDispatcher : Manages events and distributes them to relevant handlers.\u003C\u002Fli>\u003Cli class=\"li3\">Register : Registers events such as connect, message, disconnect.\u003C\u002Fli>\u003Cli class=\"li3\">Dispatch : Calls the relevant handler when an event occurs.\u003C\u002Fli>\u003Cli class=\"li3\">onConnect : Handles when a user connects.\u003C\u002Fli>\u003Cli class=\"li3\">onMessage : Handles received messages.\u003C\u002Fli>\u003Cli class=\"li3\">onDisconnect : Handles when a user disconnects.\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p4\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Additional Improvements\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">Use Redis Pub\u002FSub\u003Cstrong> \u003C\u002Fstrong>: For distributing events between multiple WebSocket servers.\u003C\u002Fli>\u003Cli class=\"li3\">Add Middleware\u003Cstrong> \u003C\u002Fstrong>: For authorization checks before dispatching events.\u003C\u002Fli>\u003Cli class=\"li3\">Implement Event Queue\u003Cstrong> \u003C\u002Fstrong>: Use RabbitMQ or Kafka to manage large-scale event processing.\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p4\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Summary\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul class=\"ul1\">\u003Cli class=\"li3\">Event-driven operations enhance flexibility and scalability.\u003C\u002Fli>\u003Cli class=\"li3\">Use an Event Dispatcher to manage events within the WebSocket Server.\u003C\u002Fli>\u003Cli class=\"li3\">Support adding new features without affecting other parts of the system.\u003C\u002Fli>\u003C\u002Ful>\u003Cp class=\"p4\"> \u003C\u002Fp>\u003Cp class=\"p3\">\u003Cstrong>Fun Activity\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp class=\"p3\">Try building a real-time chat system using an event-driven approach with events like joinRoom, sendMessage, and leaveRoom, and add a feature to broadcast messages to everyone in the room!\u003C\u002Fp>\u003Cp class=\"p3\">In the next episode, we will discuss connecting WebSocket with Microservices to support large systems and break operations into smaller parts!\u003C\u002Fp>","32_11zon_eafomz25vk.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002Ffsr09s0onqifgaw\u002F32_11zon_eafomz25vk.webp","2026-03-04 08:51:40.599Z","",{"keywords":15,"locale":118,"school_blog":128},[16,23,28,33,38,43,48,53,58,63,68,73,78,83,88,93,98,103,108,113],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:26:59.195Z","gab60xd583s3qaw","Superdev School","2026-04-10 16:07:37.087Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:31:54.955Z","264sfjffyhspetq","programmers","2026-04-10 16:07:47.221Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:31:22.575Z","lfjse4xivbgg5wu","Practice programming","2026-04-10 16:07:39.541Z",{"collectionId":17,"collectionName":18,"created":34,"created_by":13,"id":35,"name":36,"updated":37,"updated_by":13},"2026-03-04 08:31:49.362Z","2m9vv13etpn6zkx","programming language","2026-04-10 16:07:45.606Z",{"collectionId":17,"collectionName":18,"created":39,"created_by":13,"id":40,"name":41,"updated":42,"updated_by":13},"2026-03-04 08:32:26.073Z","vnvj1oaxje9m1q8","programming for beginners","2026-04-10 16:07:54.133Z",{"collectionId":17,"collectionName":18,"created":44,"created_by":13,"id":45,"name":46,"updated":47,"updated_by":13},"2026-03-04 08:32:09.324Z","gon9gv2r39iu34p","programming development","2026-04-10 16:07:50.515Z",{"collectionId":17,"collectionName":18,"created":49,"created_by":13,"id":50,"name":51,"updated":52,"updated_by":13},"2026-03-04 08:20:33.316Z","ln1ntwattzmxo0o","programming","2026-04-10 16:07:27.299Z",{"collectionId":17,"collectionName":18,"created":54,"created_by":13,"id":55,"name":56,"updated":57,"updated_by":13},"2026-03-04 08:32:15.843Z","m0x7wo77i8iycf1","Programming Education","2026-04-10 16:07:51.675Z",{"collectionId":17,"collectionName":18,"created":59,"created_by":13,"id":60,"name":61,"updated":62,"updated_by":13},"2026-03-04 08:51:37.716Z","rsp4m61xn37t2yr","scalability","2026-04-10 16:14:37.470Z",{"collectionId":17,"collectionName":18,"created":64,"created_by":13,"id":65,"name":66,"updated":67,"updated_by":13},"2026-03-04 08:51:37.925Z","to0zfxj2rizqlop","flexibility","2026-04-10 16:14:37.549Z",{"collectionId":17,"collectionName":18,"created":69,"created_by":13,"id":70,"name":71,"updated":72,"updated_by":13},"2026-03-04 08:51:38.229Z","wkfxck2h0ukgepu","system development","2026-04-10 16:14:37.643Z",{"collectionId":17,"collectionName":18,"created":74,"created_by":13,"id":75,"name":76,"updated":77,"updated_by":13},"2026-03-04 08:44:21.262Z","f2p94t41e9t8hnv","system design","2026-04-10 16:12:43.659Z",{"collectionId":17,"collectionName":18,"created":79,"created_by":13,"id":80,"name":81,"updated":82,"updated_by":13},"2026-03-04 08:34:00.920Z","ecac9y661or1xka","WebSocket","2026-04-10 16:08:05.227Z",{"collectionId":17,"collectionName":18,"created":84,"created_by":13,"id":85,"name":86,"updated":87,"updated_by":13},"2026-03-04 08:51:38.601Z","l7jxq9u9r8doacm","Event-Driven Architecture","2026-04-10 16:14:37.736Z",{"collectionId":17,"collectionName":18,"created":89,"created_by":13,"id":90,"name":91,"updated":92,"updated_by":13},"2026-03-04 08:51:38.831Z","fxvxejehb7m4ork","Event-Driven","2026-04-10 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08:20:11.547Z","ey3puyme01a9bsw","Go","2026-04-10 16:07:25.893Z",{"code":119,"collectionId":120,"collectionName":121,"created":122,"flag":123,"id":124,"is_default":125,"label":126,"updated":127},"en","pbc_1989393366","locales","2026-01-22 11:00:02.726Z","twemoji:flag-united-states","qv9c1llfov2d88z",false,"English","2026-04-10 15:42:46.825Z",{"category":129,"collectionId":130,"collectionName":131,"expand":132,"id":146,"views":147},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":133},{"blogIds":134,"collectionId":135,"collectionName":136,"created":137,"created_by":13,"id":129,"image":138,"image_alt":13,"image_path":139,"label":140,"name":141,"priority":142,"publish_at":143,"scheduled_at":13,"status":144,"updated":145,"updated_by":13},[],"sclcatblg987654321","school_category_blogs","2026-03-04 08:33:53.210Z","59ty92ns80w_15oc1implw.png","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclcatblg987654321\u002Fwqxt7ag2gn7xcmk\u002F59ty92ns80w_15oc1implw.png",{"en":141,"th":141},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","lkfwvdf86zteegl",232,"fsr09s0onqifgaw",[20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115],"2025-01-27 04:43:25.360Z","Discover Event-Driven Architecture and how to adapt your WebSocket Server for Event-Driven operations to enhance flexibility and scalability.","go-event-driven-websocket","2026-04-22 07:11:48.614Z",{"en":152}]