Caching & Synchronization

Part of the Full Stack Developer Roadmap.

Summary

Keeping client-cached server data in sync with what's actually in the database — stale data after a mutation is one of the most common full-stack UX bugs.

How to Learn This

1After a mutation, e.g. creating a post, invalidate or update the relevant cached query.
2Learn React Query's `staleTime` and `refetchOnWindowFocus` and how they affect freshness.
3Test a scenario where two browser tabs edit the same data and see how your app handles it.

React Query for Server State

WebSockets

More topics in State Management

Client State vs Server State Context API Zustand/Redux Toolkit React Query for Server State

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