Tips & Best Practices

• Avoid sending large objects; prefer IDs, deltas, or streamed binary data.

• Do not perform database access or other blocking operations inside event handlers.

• Keep event handlers lightweight—receive, validate, and emit only.

• Offload business logic to API or worker services, and emit only the results back to clients.

• Always validate incoming event payloads for auth, size limits and schema correctness.

• Use rooms to efficiently target messages to subsets of connected clients.

• Use namespaces to partition and isolate logical communication channels.

• Handle client disconnects carefully to prevent resource leaks and stale state.