Build a Chat Room

Mediator pattern

Challenge 3 of Decouple EventsIntermediate~55 minFree

Build a chat room step by step to learn the Mediator pattern. Instead of users holding references to each other, every message flows through a central ChatRoom that coordinates delivery. You will add broadcasting, user-driven sends, private messages, leaving, and a centralized banned-words policy.

5 steps

1. 1The Mediator Delivers
2. 2Users Send Through the Room
3. 3Private Messages
4. 4Leaving the Room
5. 5Centralized Policy: Banned Words