[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"academy-blogs-en-1-1-all-websocket-chat-room-management-graphql-all--*":3,"academy-blog-translations-nhxtrdpa103lppi":104},{"data":4,"page":92,"perPage":92,"totalItems":92,"totalPages":92},[5],{"alt":6,"collectionId":7,"collectionName":8,"content":9,"cover_image":10,"cover_image_path":11,"created":12,"created_by":13,"expand":14,"id":99,"keywords":100,"locale":74,"published_at":101,"scheduled_at":13,"school_blog":96,"short_description":102,"status":94,"title":6,"updated":103,"updated_by":13,"slug":97,"views":98},"EP.37 Creating a Chat Room Management System with WebSocket and GraphQL","sclblg987654321","school_blog_translations","\u003Ch3>Why Have a Chat Room System?\u003C\u002Fh3>\u003Cp>A chat room system allows users to organize discussions into smaller groups, where only relevant users are present in each room. This is suitable for:\u003C\u002Fp>\u003Cul>\u003Cli>\u003Cstrong>Group Chats:\u003C\u002Fstrong> Members can join or leave rooms as needed.\u003C\u002Fli>\u003Cli>\u003Cstrong>Topic-Based Chat Rooms:\u003C\u002Fstrong> For example, discussion rooms for teams within a company.\u003C\u002Fli>\u003Cli>\u003Cstrong>Customer Support Chats:\u003C\u002Fstrong> Agents can enter rooms to address customer inquiries.\u003C\u002Fli>\u003C\u002Ful>\u003Ch3>Structure of the Chat Room Management System\u003C\u002Fh3>\u003Col>\u003Cli>\u003Cstrong>WebSocket Server: \u003C\u002Fstrong>Manages user connections and sends messages to the relevant rooms.\u003C\u002Fli>\u003Cli>\u003Cstrong>GraphQL API: \u003C\u002Fstrong>Supports commands for creating rooms, joining rooms, and sending\u002Freceiving messages.\u003C\u002Fli>\u003Cli>\u003Cstrong>Database (PostgreSQL \u002F MongoDB): \u003C\u002Fstrong>Used to store room and message data.\u003C\u002Fli>\u003Cli>\u003Cstrong>GraphQL Subscription: \u003C\u002Fstrong>Sends messages to members in the room in real-time.\u003C\u002Fli>\u003C\u002Fol>\u003Ch3>Install Necessary Libraries\u003C\u002Fh3>\u003Cpre>\u003Ccode class=\"language-plaintext\">go get github.com\u002F99designs\u002Fgqlgen\ngo get github.com\u002Fgorilla\u002Fwebsocket\ngo get github.com\u002Fjmoiron\u002Fsqlx\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3>Database Setup for the Chat Room System\u003C\u002Fh3>\u003Cp>File: \u003Ccode>\u003Cspan>schema.sql\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">CREATE TABLE chat_rooms (\n    id SERIAL PRIMARY KEY,\n    name TEXT NOT NULL UNIQUE\n);\n\nCREATE TABLE messages (\n    id SERIAL PRIMARY KEY,\n    room_id INTEGER REFERENCES chat_rooms(id),\n    content TEXT NOT NULL,\n    sender TEXT NOT NULL,\n    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3>Creating GraphQL Schema for the Chat Room System\u003C\u002Fh3>\u003Cp>File: \u003Ccode>\u003Cspan>schema.graphql\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">type Query {\n  rooms: [ChatRoom!]!\n  messages(roomID: ID!): [Message!]!\n}\n\ntype Mutation {\n  createRoom(name: String!): ChatRoom!\n  joinRoom(roomID: ID!): String!\n  sendMessage(roomID: ID!, content: String!, sender: String!): Message!\n}\n\ntype Subscription {\n  messageAdded(roomID: ID!): Message!\n}\n\ntype ChatRoom {\n  id: ID!\n  name: String!\n}\n\ntype Message {\n  id: ID!\n  roomID: ID!\n  content: String!\n  sender: String!\n  timestamp: String!\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3>Creating Resolvers for the Chat Room System\u003C\u002Fh3>\u003Cp>File: \u003Ccode>\u003Cspan>resolver.go\u003C\u002Fspan>\u003C\u002Fcode>\u003C\u002Fp>\u003Cpre>\u003Ccode class=\"language-plaintext\">package main\n\nimport (\n    \"context\"\n    \"database\u002Fsql\"\n    \"fmt\"\n    \"sync\"\n    \"time\"\n\n    _ \"github.com\u002Flib\u002Fpq\"\n)\n\ntype ChatRoom struct {\n    ID   int    `json:\"id\"`\n    Name string `json:\"name\"`\n}\n\ntype Message struct {\n    ID        int       `json:\"id\"`\n    RoomID    int       `json:\"roomID\"`\n    Content   string    `json:\"content\"`\n    Sender    string    `json:\"sender\"`\n    Timestamp time.Time `json:\"timestamp\"`\n}\n\ntype Resolver struct {\n    mu          sync.Mutex\n    db          *sql.DB\n    subscribers map[int]map[string]chan Message\n}\n\nfunc NewResolver(db *sql.DB) *Resolver {\n    return &Resolver{\n        db:          db,\n        subscribers: make(map[int]map[string]chan Message),\n    }\n}\n\nfunc (r *Resolver) Query_rooms(ctx context.Context) ([]ChatRoom, error) {\n    rows, err := r.db.Query(\"SELECT id, name FROM chat_rooms\")\n    if err != nil {\n        return nil, err\n    }\n    defer rows.Close()\n\n    var rooms []ChatRoom\n    for rows.Next() {\n        var room ChatRoom\n        if err := rows.Scan(&room.ID, &room.Name); err != nil {\n            return nil, err\n        }\n        rooms = append(rooms, room)\n    }\n    return rooms, nil\n}\n\nfunc (r *Resolver) Mutation_createRoom(ctx context.Context, name string) (ChatRoom, error) {\n    var room ChatRoom\n    err := r.db.QueryRow(\"INSERT INTO chat_rooms (name) VALUES ($1) RETURNING id, name\", name).\n        Scan(&room.ID, &room.Name)\n    return room, err\n}\n\nfunc (r *Resolver) Mutation_sendMessage(ctx context.Context, roomID int, content string, sender string) (Message, error) {\n    var message Message\n    err := r.db.QueryRow(\"INSERT INTO messages (room_id, content, sender) VALUES ($1, $2, $3) RETURNING id, room_id, content, sender, timestamp\", roomID, content, sender).\n        Scan(&message.ID, &message.RoomID, &message.Content, &message.Sender, &message.Timestamp)\n    \n    r.mu.Lock()\n    for _, ch := range r.subscribers[roomID] {\n        ch <- message\n    }\n    r.mu.Unlock()\n    return message, err\n}\u003C\u002Fcode>\u003C\u002Fpre>\u003Ch3>Challenge!\u003C\u002Fh3>\u003Cp>Try adding an admin feature to the chat room system that allows administrators to set user permissions, such as deleting messages or restricting access.\u003C\u002Fp>\u003Chr>\u003Ch3>Next EP\u003C\u002Fh3>\u003Cp>In EP.38, we will add Push Notification support to the WebSocket Chat! 🚀\u003C\u002Fp>","46_11zon_13208gvn81.webp","https:\u002F\u002Ftwsme-r2.tumwebsme.com\u002Fsclblg987654321\u002F6jd15ny8jcgounv\u002F46_11zon_13208gvn81.webp","2026-03-04 08:51:14.887Z","",{"keywords":15,"locale":68,"school_blog":78},[16,23,28,33,38,43,48,53,58,63],{"collectionId":17,"collectionName":18,"created":19,"created_by":13,"id":20,"name":21,"updated":22,"updated_by":13},"sclkey987654321","school_keywords","2026-03-04 08:51:13.245Z","i4i3s8cyj52mx4l","Group Chat","2026-04-10 16:14:33.995Z",{"collectionId":17,"collectionName":18,"created":24,"created_by":13,"id":25,"name":26,"updated":27,"updated_by":13},"2026-03-04 08:51:13.649Z","wcctbc65iq5n4bj","GraphQL API","2026-04-10 16:14:34.086Z",{"collectionId":17,"collectionName":18,"created":29,"created_by":13,"id":30,"name":31,"updated":32,"updated_by":13},"2026-03-04 08:48:07.088Z","brfbypclggbbkcx","WebSocket API","2026-04-10 16:13:40.594Z",{"collectionId":17,"collectionName":18,"created":34,"created_by":13,"id":35,"name":36,"updated":37,"updated_by":13},"2026-03-04 08:51:13.905Z","sha4b5kwtz2qx0r","Chat Room Management","2026-04-10 16:14:34.254Z",{"collectionId":17,"collectionName":18,"created":39,"created_by":13,"id":40,"name":41,"updated":42,"updated_by":13},"2026-03-04 08:47:05.949Z","caufix9o52uw4bh","Real-Time Chat","2026-04-10 16:13:23.517Z",{"collectionId":17,"collectionName":18,"created":44,"created_by":13,"id":45,"name":46,"updated":47,"updated_by":13},"2026-03-04 08:20:14.253Z","ah6lvy4x8qe08l5","Golang","2026-04-10 16:07:26.172Z",{"collectionId":17,"collectionName":18,"created":49,"created_by":13,"id":50,"name":51,"updated":52,"updated_by":13},"2026-03-04 08:20:11.547Z","ey3puyme01a9bsw","Go","2026-04-10 16:07:25.893Z",{"collectionId":17,"collectionName":18,"created":54,"created_by":13,"id":55,"name":56,"updated":57,"updated_by":13},"2026-03-04 08:51:14.205Z","laiwsvubam25wcf","GraphQL","2026-04-10 16:14:34.380Z",{"collectionId":17,"collectionName":18,"created":59,"created_by":13,"id":60,"name":61,"updated":62,"updated_by":13},"2026-03-04 08:34:00.920Z","ecac9y661or1xka","WebSocket","2026-04-10 16:08:05.227Z",{"collectionId":17,"collectionName":18,"created":64,"created_by":13,"id":65,"name":66,"updated":67,"updated_by":13},"2026-03-04 08:51:14.568Z","rlxotivysdr3gjh","Chat Room","2026-04-10 16:14:34.527Z",{"code":69,"collectionId":70,"collectionName":71,"created":72,"flag":73,"id":74,"is_default":75,"label":76,"updated":77},"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":79,"collectionId":80,"collectionName":81,"created":13,"expand":82,"id":96,"slug":97,"updated":13,"views":98},"wqxt7ag2gn7xcmk","pbc_2105096300","school_blogs",{"category":83},{"blogIds":84,"collectionId":85,"collectionName":86,"created":87,"created_by":13,"id":79,"image":88,"image_alt":13,"image_path":89,"label":90,"name":91,"priority":92,"publish_at":93,"scheduled_at":13,"status":94,"updated":95,"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":91,"th":91},"Golang The Series",1,"2026-03-16 04:39:38.440Z","published","2026-04-25 02:32:15.470Z","nhxtrdpa103lppi","websocket-chat-room-management-graphql",227,"6jd15ny8jcgounv",[20,25,30,35,40,45,50,55,60,65],"2025-03-18 02:45:21.285Z","Learn how to build a Chat Room Management System using WebSocket and GraphQL, supporting the creation of chat rooms, joining rooms, and real-time messaging between users.","2026-05-06 08:38:40.142Z",{"th":97,"en":97}]