Real-time Message Broadcasting

Coming Soon

This lesson will teach you how to build efficient message broadcasting systems for instant delivery across your chat server. You’ll learn how to:

• Implement publish/subscribe patterns for message distribution
• Build efficient message routing algorithms
• Handle message delivery guarantees and failures
• Optimize for high-throughput message broadcasting
• Implement presence and typing indicators

What You’ll Build

By the end of this lesson, you’ll have implemented:

• Efficient pub/sub message distribution
• Real-time typing indicators and presence
• Message delivery confirmation systems
• Optimized broadcasting for large numbers of users
• Advanced message routing and filtering

Key Concepts Preview

% Message broadcasting system
broadcast_to_room(RoomId, Message) ->
    Users = chat_room:get_users(RoomId),
    lists:foreach(fun(User) ->
        websocket_handler:send_message(User#user.pid, Message)
    end, Users).

% Pub/sub pattern
subscribe_to_room(UserId, RoomId) ->
    gen_event:add_handler(room_events, {user_handler, UserId}, []).

This lesson builds on the chat server core from Lesson 16 and prepares you for the user authentication we’ll explore in Lesson 18.

This lesson is currently under development. Check back soon for the complete content!