Socket.IO rooms don't cross server nodes—use the Redis adapter when you scale
Socket.IO rooms are local to one server process. Learn when to add the Redis adapter for multi-node broadcasts.
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Socket.IO rooms are local to one server process. Learn when to add the Redis adapter for multi-node broadcasts.
Node.js saturates on a single thread, and Discloud's CPU-based horizontal scaling has a reaction delay. Here is how to set per-service thresholds and replica limits so traffic spikes do not turn into user-facing errors.
Minimal Socket.IO architecture using rooms for fan-out and a shared Redis adapter for horizontal scale, with handshake authentication, best-effort connection state recovery, and clear failure modes.
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.
Heroku gives you two scaling levers — bigger dynos or more dynos — and they solve different problems. Here's how to tell which one your app actually needs, and the database bottleneck neither one fixes.
Socket.io is stateful, so scaling beyond one process requires choosing between the in-process Memory Adapter and the Redis Adapter for cross-node broadcast. This guide compares the options and shows how to validate a Redis-backed deployment.
Learn how Vitess Vindexes decouple logical sharding keys from physical MySQL shards to enable horizontal scaling without application code changes.
Context Moleculer's built-in cache pattern relies on per-node TTL expiration. When services scale horizontally, each node maintains its own cache instance with independent timers. The framework does not ship with a native cross-node invalidation mechanism, so a cache entry that expires on one node may remain valid on another until its local TTL elapses. Goal
Distributed Content Delivery and Cache Synchronization Ghost CMS utilizes an internal caching layer to minimize database queries and improve frontend performance. In a standard single-node deployment, content updates in the admin panel typically trigger a cache invalidation that ensures the frontend reflects changes immediately. When scaling Ghost horizontal
nodejs
heroku
vitess
moleculer
ghost