Scaling Socket.io

Scaling Socket.io applications often involves using a message broker like Redis to handle multiple server instances.

Server-side Example with Redis:

1. Install Redis Adapter

npm install socket.io-redis

1. Configure Redis Adapter

const redisAdapter = require('socket.io-redis'); const io = require('socket.io')(server); io.adapter(redisAdapter({ host: 'localhost', port: 6379 }));