What does TanStack Query (React Query) give you over useEffect and fetch?
Model answer
It manages server state: caching, background refetching, deduplicating identical requests, retries, pagination, mutations with cache invalidation, and loading and error flags. You write useQuery({ queryKey, queryFn }) instead of handling effects and race conditions yourself.
It separates server data from UI state, which keeps components simpler.
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TanStack Query (React Query): Fetching, Caching and Updating Server Data in the course React.js Full Course: Beginner to Advanced.
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