React Query is a data-fetching library for React that handles server-state management with built-in caching, background updates, and synchronization. It uses declarative hooks to fetch, cache, and invalidate data, supports stale-while-revalidate, automatic retries, and pagination/infinites, and provides seamless mutation workflows with optimistic updates. Queries are keyed for precise invalidation and refetching, while devtools offer insight into cache, query statuses, and mutation flows. Overall, it abstracts away boilerplate around loading, error handling, and cache management, enabling faster, more reliable UI data handling.

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React Query

Data fetching, caching, and syncing server state for React apps.

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