Designing Real-time Chat

Imagine building a chat application where messages appear instantly! This is where Redis Pub/Sub shines. It's perfect for real-time communication without constant 'checking for new messages'.

In this lesson, you'll learn how to design a basic chat system using Redis Publish/Subscribe, turning chat rooms into channels and messages into published events.

The core idea for a chat application with Pub/Sub is simple: each chat room corresponds to a unique Redis Channel.

• When a user wants to join a chat room (e.g., 'general' or 'support'), their client application will subscribe to the corresponding Redis channel.
• When a user sends a message in that room, their client will publish the message to that specific channel.