[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-en-1-1-all-golang-websocket-collaborative-app-all--*":3,"academy-blog-translations-j2u1s0w2l8r6d5f":79},{"data":4,"page":67,"perPage":67,"totalItems":67,"totalPages":67},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":73,"keywords":74,"locale":49,"published_at":75,"scheduled_at":13,"school_blog":71,"short_description":76,"slug":77,"status":69,"title":6,"updated":78,"updated_by":13,"views":72},"EP.83 Building Collaborative Applications with WebSocket","sclblg987654321","school_blog_translations","\u003Cp>In this episode, we’ll explore how to build collaborative applications using Golang and WebSocket, enabling multiple users to work together in real time — such as:\u003C\u002Fp>\u003Cul>\u003Cli>Collaborative document editing\u003C\u002Fli>\u003Cli>Shared whiteboards\u003C\u002Fli>\u003Cli>Real-time team chat systems\u003C\u002Fli>\u003C\u002Ful>\u003Cp> \u003C\u002Fp>\u003Ch2>🔍 Why Use WebSocket for Collaborative Applications?\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>Collaborative apps require instant and continuous data exchange, which traditional HTTP (request-response model) cannot efficiently support due to its latency and polling overhead.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Cp>WebSocket solves this by providing a full-duplex connection, allowing the server to push updates to all clients immediately when data changes.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>✅ Ideal Use Cases for WebSocket\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cfigure class=\"table\">\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Application Type\u003C\u002Fth>\u003Cth>Description\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Collaborative Document Editing\u003C\u002Ftd>\u003Ctd>Multiple users edit the same document live (like Google Docs)\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Online Whiteboards\u003C\u002Ftd>\u003Ctd>Team members draw on the same canvas in real time\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Group Chat\u003C\u002Ftd>\u003Ctd>All users see new messages instantly\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Ffigure>\u003Cp> \u003C\u002Fp>\u003Ch2>⚙️ Setting Up a WebSocket Server in Golang\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>In this example, we use the popular \u003Ccode inline=\"\">gorilla\u002Fwebsocket\u003C\u002Fcode> package to manage WebSocket connections in Go.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch3>1. Import required packages\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">import (\n    \"log\"\n    \"net\u002Fhttp\"\n    \"github.com\u002Fgorilla\u002Fwebsocket\"\n)\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch3>2. Configure the WebSocket upgrader\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">var upgrader = websocket.Upgrader{\n    CheckOrigin: func(r *http.Request) bool {\n        return true \u002F\u002F Allow all origins (limit in production)\n    },\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch3>3. Maintain a map of connected clients\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">var clients = make(map[*websocket.Conn]bool)\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch2>💬 Handling Connections and Broadcasting Messages\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Ch3>Broadcast to all clients\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">func broadcastMessage(message []byte) {\n    for client := range clients {\n        err := client.WriteMessage(websocket.TextMessage, message)\n        if err != nil {\n            client.Close()\n            delete(clients, client)\n        }\n    }\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch3>Handle new connections\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">func handleConnections(w http.ResponseWriter, r *http.Request) {\n    ws, err := upgrader.Upgrade(w, r, nil)\n    if err != nil {\n        log.Println(\"Upgrade error:\", err)\n        return\n    }\n    defer ws.Close()\n\n    clients[ws] = true\n\n    for {\n        _, msg, err := ws.ReadMessage()\n        if err != nil {\n            log.Println(\"Read error:\", err)\n            delete(clients, ws)\n            break\n        }\n        broadcastMessage(msg)\n    }\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch3>Start the server\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext language-go\">func main() {\n    http.HandleFunc(\"\u002Fws\", handleConnections)\n    log.Println(\"WebSocket server started on :8080\")\n    log.Fatal(http.ListenAndServe(\":8080\", nil))\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\u003Cp> \u003C\u002Fp>\u003Ch2>🧠 Handling Conflicts and Synchronization\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>When multiple users edit the same data, conflicts may occur. Here are common strategies to resolve them:\u003C\u002Fp>\u003Cfigure class=\"table\">\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Method\u003C\u002Fth>\u003Cth>Description\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Operational Transformation (OT)\u003C\u002Ftd>\u003Ctd>Convert changes into operations and merge intelligently across clients\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Last Write Wins (LWW)\u003C\u002Ftd>\u003Ctd>The most recent change overrides others\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Versioning\u003C\u002Ftd>\u003Ctd>Attach version IDs to changes to manage consistency and detect conflicts\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Ffigure>\u003Cp>For basic chat or whiteboard apps, using timestamp and user ID is often enough to ensure message order and ownership.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>🧪 Real-world Application Examples\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cfigure class=\"table\">\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>App Type\u003C\u002Fth>\u003Cth>Use Case\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Whiteboard\u003C\u002Ftd>\u003Ctd>Users draw simultaneously, broadcasting shapes and colors live\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Group Chat\u003C\u002Ftd>\u003Ctd>Real-time message broadcast to all participants\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Document Editor\u003C\u002Ftd>\u003Ctd>Shared editing with OT or LWW handling conflicting changes\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Ffigure>\u003Cp> \u003C\u002Fp>\u003Ch2>⚠️ Considerations for Production\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cfigure class=\"table\">\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Topic\u003C\u002Fth>\u003Cth>Recommendation\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Resource Management\u003C\u002Ftd>\u003Ctd>Limit max clients per server\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Security\u003C\u002Ftd>\u003Ctd>Validate origin and authenticate users before accepting WebSocket connections\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>Scalability\u003C\u002Ftd>\u003Ctd>Use Redis Pub\u002FSub, NATS, or Kafka for horizontal scaling\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Ffigure>\u003Cp> \u003C\u002Fp>\u003Chr>\u003Cp> \u003C\u002Fp>\u003Ch2>🚀 Challenge: Try Building Your Own!\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>Build a small real-time collaborative app using Golang + WebSocket. Ideas:\u003C\u002Fp>\u003Cul>\u003Cli>✅ Online Whiteboard\u003C\u002Fli>\u003Cli>✅ Real-time Classroom Chat\u003C\u002Fli>\u003Cli>✅ Minimal Collaborative Text Editor\u003C\u002Fli>\u003C\u002Ful>\u003Cp>Bonus: Add login, filter by user group, and implement room-specific broadcasts.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>🔜 Next Episode\u003C\u002Fh2>\u003Cp> \u003C\u002Fp>\u003Cp>EP.84: Load Testing Your WebSocket Server\u003Cbr>We’ll explore how to benchmark WebSocket servers using stress-testing tools and simulate thousands of connections to assess real-world performance.\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>","138_11zon_gmipsl4ex8.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002Fxnwd1cgoy2jhl1l\u002F138_11zon_gmipsl4ex8.webp","2026-03-04 08:46:56.110Z","",{"keywords":15,"locale":43,"school_blog":53},[16,23,28,33,38],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:40:54.606Z","s26m2zvbm8amosp","Real-time Systems","2026-04-10 16:12:40.769Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:46:54.988Z","3u0oyh9ecvzk9lb","Collaborative App","2026-04-10 16:13:20.576Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:34:00.920Z","ecac9y661or1xka","WebSocket","2026-04-10 16:08:05.227Z",{"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 08:20:14.253Z","ah6lvy4x8qe08l5","Golang","2026-04-10 16:07:26.172Z",{"code":44,"collectionId":45,"collectionName":46,"created":47,"flag":48,"id":49,"is_default":50,"label":51,"updated":52},"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":54,"collectionId":55,"collectionName":56,"expand":57,"id":71,"views":72},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":58},{"blogIds":59,"collectionId":60,"collectionName":61,"created":62,"created_by":13,"id":54,"image":63,"image_alt":13,"image_path":64,"label":65,"name":66,"priority":67,"publish_at":68,"scheduled_at":13,"status":69,"updated":70,"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":66,"th":66},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","j2u1s0w2l8r6d5f",207,"xnwd1cgoy2jhl1l",[20,25,30,35,40],"2025-09-01 02:32:49.678Z","Learn how to create real-time collaborative systems using Golang and WebSocket, such as document editing, shared whiteboards, and team chats.","golang-websocket-collaborative-app","2026-04-25 02:48:10.333Z",{"en":77}]