Socket.IO Rooms Stay Local Until You Add an Adapter
Socket.IO rooms broadcast only within one Node process. Learn when to add the Redis adapter and verify cross-node delivery.
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nodejs
socketioScaling Socket.IO with the Redis Adapter: Practical Setup and Trade‑offs
Learn how to horizontally scale Socket.IO with the Redis adapter: minimal code, NGINX sticky sessions, verification commands, and the operational trade‑offs you’ll face in production.