[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-en-1-1-all-websocket-instant-notification-system-all--*":3,"academy-blog-translations-363m2ttpfonee1y":90},{"data":4,"page":77,"perPage":77,"totalItems":77,"totalPages":77},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":85,"keywords":86,"locale":59,"published_at":87,"scheduled_at":13,"school_blog":81,"short_description":88,"status":79,"title":6,"updated":89,"updated_by":13,"slug":82,"views":84},"EP.77 Building an Instant Notification System with WebSocket","sclblg987654321","school_blog_translations","\u003Cp>In this episode, you’ll learn how to build an \u003Cstrong>Instant Notification System\u003C\u002Fstrong> using \u003Cstrong>WebSocket\u003C\u002Fstrong>, allowing users to receive real-time alerts whenever there’s a new message, event, or activity in your chat application or other real-time platforms.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Cp>We’ll be using \u003Cstrong>Golang\u003C\u002Fstrong> to build a WebSocket server that can:\u003C\u002Fp>\u003Cul>\u003Cli>Broadcast notifications to \u003Cstrong>all connected clients\u003C\u002Fstrong>\u003C\u002Fli>\u003Cli>Or send \u003Cstrong>targeted notifications\u003C\u002Fstrong> to specific users\u003Cbr>We'll also provide sample code for both \u003Cstrong>server\u003C\u002Fstrong> and \u003Cstrong>client\u003C\u002Fstrong> to help you understand the full real-time flow.\u003C\u002Fli>\u003C\u002Ful>\u003Cp> \u003C\u002Fp>\u003Ch2>🔸 Why Use an Instant Notification System?\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>\u003Cstrong>1. Improved User Experience:\u003C\u002Fstrong>\u003Cbr>Users get notified about important events instantly, without refreshing or polling the app.\u003C\u002Fp>\u003Cp>\u003Cstrong>2. Real-Time Communication:\u003C\u002Fstrong>\u003Cbr>WebSocket enables \u003Cstrong>bi-directional\u003C\u002Fstrong> communication between client and server, making real-time delivery seamless.\u003C\u002Fp>\u003Cp>\u003Cstrong>3. Scalable for Multiple Users:\u003C\u002Fstrong>\u003Cbr>The system can handle broadcasting messages to multiple users simultaneously without heavy performance loss.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>🔸 System Architecture Overview\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cul>\u003Cli>\u003Cstrong>Server:\u003C\u002Fstrong>\u003Cbr>Receives events or messages and pushes notifications to clients via WebSocket\u003C\u002Fli>\u003Cli>\u003Cstrong>Client:\u003C\u002Fstrong>\u003Cbr>Listens for incoming notifications and displays them instantly via UI\u003C\u002Fli>\u003C\u002Ful>\u003Cp> \u003C\u002Fp>\u003Ch2>✅ Sample WebSocket Server (Golang)\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">package main\n\nimport (\n    \"log\"\n    \"net\u002Fhttp\"\n    \"github.com\u002Fgorilla\u002Fwebsocket\"\n)\n\nvar clients = make(map[*websocket.Conn]bool)\nvar broadcast = make(chan string)\n\nvar upgrader = websocket.Upgrader{\n    CheckOrigin: func(r *http.Request) bool {\n        return true\n    },\n}\n\nfunc handleConnections(w http.ResponseWriter, r *http.Request) {\n    conn, err := upgrader.Upgrade(w, r, nil)\n    if err != nil {\n        log.Println(err)\n        return\n    }\n    defer conn.Close()\n\n    clients[conn] = true\n\n    for {\n        var msg string\n        err := conn.ReadJSON(&msg)\n        if err != nil {\n            log.Println(err)\n            delete(clients, conn)\n            break\n        }\n\n        broadcast <- msg\n    }\n}\n\nfunc handleNotifications() {\n    for {\n        msg := <-broadcast\n        for client := range clients {\n            err := client.WriteJSON(msg)\n            if err != nil {\n                log.Println(err)\n                client.Close()\n                delete(clients, client)\n            }\n        }\n    }\n}\n\nfunc main() {\n    http.HandleFunc(\"\u002Fws\", handleConnections)\n    go handleNotifications()\n\n    log.Println(\"WebSocket Notification Server started on :8080\")\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch2>✅ Sample Client (JavaScript)\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-javascript\">const socket = new WebSocket(\"ws:\u002F\u002Flocalhost:8080\u002Fws\");\n\n\u002F\u002F Receive notification\nsocket.onmessage = function(event) {\n    const message = event.data;\n    console.log(\"📢 Notification Received:\", message);\n    \u002F\u002F You can update UI with the notification here\n};\n\n\u002F\u002F Send test message\nfunction sendNotification(msg) {\n    socket.send(JSON.stringify(msg));\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch2>🧪 How to Test the System\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Col>\u003Cli>Start the Go WebSocket server\u003C\u002Fli>\u003Cli>Connect multiple clients (e.g., open browser tabs)\u003C\u002Fli>\u003Cli>Send notification messages from any client\u003C\u002Fli>\u003Cli>Verify that all connected clients receive the message in real time\u003C\u002Fli>\u003C\u002Fol>\u003Cp> \u003C\u002Fp>\u003Chr>\u003Cp> \u003C\u002Fp>\u003Ch2>💡 Tips & Best Practices\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cul>\u003Cli>✅ Use \u003Cstrong>targeted notifications\u003C\u002Fstrong> for specific users to avoid unnecessary broadcasts\u003C\u002Fli>\u003Cli>✅ Limit the number of messages per second to prevent server overload\u003C\u002Fli>\u003Cli>✅ Integrate with \u003Cstrong>Redis Pub\u002FSub\u003C\u002Fstrong> if you need to scale WebSocket across multiple server instances\u003C\u002Fli>\u003C\u002Ful>\u003Cp> \u003C\u002Fp>\u003Ch2>🔜 Coming Next in EP.78:\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>\u003Cstrong>Scaling WebSocket Servers with Kubernetes\u003C\u002Fstrong>\u003Cbr>In the next episode, we’ll show you how to deploy and scale your WebSocket server using Kubernetes, enabling you to handle thousands of concurrent connections reliably.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Cp data-start=\"498\" data-end=\"834\">\u003Cstrong>Read more\u003C\u002Fstrong>\u003C\u002Fp>\u003Cul>\u003Cli>\u003Cp data-start=\"498\" data-end=\"834\">\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.superdev.school\u002Fblogs\u002Fcategories\u002FGolang\">\u003Cstrong>Golang The Series\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003C\u002Fli>\u003Cli>\u003Cp data-start=\"498\" data-end=\"834\">\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.superdev.school\u002Fblogs\u002Fcategories\u002FJS2GO\">\u003Cstrong>JS2GO\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003C\u002Fli>\u003Cli>\u003Cp data-start=\"498\" data-end=\"834\">\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.superdev.school\u002Fen\u002Fblogs\u002Fcategories\u002FTailwind%20CSS\">\u003Cstrong>10 Eps That Will Make You a Pro Tailwind CSS Overnight\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003C\u002Fli>\u003C\u002Ful>\u003Cp>\u003Cstrong>🔵 Facebook: \u003C\u002Fstrong>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.facebook.com\u002Fsuperdev.school.th\">\u003Cstrong>Superdev School  (Superdev)\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003Cp>\u003Cstrong>📸 Instagram: \u003C\u002Fstrong>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.instagram.com\u002Fsuperdevschool\u002F\">\u003Cstrong>superdevschool\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003Cp>\u003Cstrong>🎬 TikTok: \u003C\u002Fstrong>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.tiktok.com\u002F@superdevschool\">\u003Cstrong>superdevschool\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>\u003Cp class=\"\" data-start=\"5978\" data-end=\"6095\">\u003Cstrong>🌐 Website: \u003C\u002Fstrong>\u003Ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\u002F\u002Fwww.superdev.school\u002F\">\u003Cstrong>www.superdev.school\u003C\u002Fstrong>\u003C\u002Fa>\u003C\u002Fp>","126_11zon_kq568q7625.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002Fpsp95z1edvqnsgr\u002F126_11zon_kq568q7625.webp","2026-03-04 08:47:09.667Z","",{"keywords":15,"locale":53,"school_blog":63},[16,23,28,33,38,43,48],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:46:14.508Z","1q1s7e3t7jazcq5","Real-Time Messaging","2026-04-10 16:13:10.467Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:47:08.221Z","1uy0kc96zxn0um4","Instant Notification","2026-04-10 16:13:24.118Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:20:14.253Z","ah6lvy4x8qe08l5","Golang","2026-04-10 16:07:26.172Z",{"collectionId":17,"collectionName":18,"created":34,"created_by":13,"id":35,"name":36,"updated":37,"updated_by":13},"2026-03-04 08:20:11.547Z","ey3puyme01a9bsw","Go","2026-04-10 16:07:25.893Z",{"collectionId":17,"collectionName":18,"created":39,"created_by":13,"id":40,"name":41,"updated":42,"updated_by":13},"2026-03-04 08:47:08.604Z","qgbhpvuawt0d7sv","real-time alerts","2026-04-10 16:13:24.200Z",{"collectionId":17,"collectionName":18,"created":44,"created_by":13,"id":45,"name":46,"updated":47,"updated_by":13},"2026-03-04 08:45:13.578Z","qwq1kseajvv4cne","notification system","2026-04-10 16:12:55.954Z",{"collectionId":17,"collectionName":18,"created":49,"created_by":13,"id":50,"name":51,"updated":52,"updated_by":13},"2026-03-04 08:34:00.920Z","ecac9y661or1xka","WebSocket","2026-04-10 16:08:05.227Z",{"code":54,"collectionId":55,"collectionName":56,"created":57,"flag":58,"id":59,"is_default":60,"label":61,"updated":62},"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":64,"collectionId":65,"collectionName":66,"created":13,"expand":67,"id":81,"slug":82,"updated":83,"views":84},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":68},{"blogIds":69,"collectionId":70,"collectionName":71,"created":72,"created_by":13,"id":64,"image":73,"image_alt":13,"image_path":74,"label":75,"name":76,"priority":77,"publish_at":78,"scheduled_at":13,"status":79,"updated":80,"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":76,"th":76},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","363m2ttpfonee1y","websocket-instant-notification-system","2026-05-11 03:18:40.121Z",262,"psp95z1edvqnsgr",[20,25,30,35,40,45,50],"2025-08-18 02:21:19.539Z","Learn how to build an Instant Notification System using WebSocket to deliver real-time updates and alerts to users. Includes complete code examples in Go for both server and client sides.","2026-05-06 08:38:16.157Z",{"th":82,"en":82}]