Phase 12 · Real-time Features

Topics

Real-time State Sync

Part of the Full Stack Developer Roadmap.

Summary

Keeping your frontend's displayed state correctly synchronized with real-time events from the backend — merging live updates into React Query's cache or local state without causing UI glitches.

How to Learn This

  • 1Update a React Query cache directly when a real-time event arrives, instead of refetching everything.
  • 2Handle out-of-order or duplicate real-time events gracefully.
  • 3Test what happens to your UI when the real-time connection briefly drops and reconnects.

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