TanStack Query in AI answers

TanStack Query is an open-source server-state management library for modern frontend apps that provides caching, a lifecycle, and declarative APIs for fetching, sharing, refetching, mutating, and observing server data. It coordinates data fetching across components through a shared cache, handling cancellation, retries, deduplication, background updates, and garbage collection, while supporting optimistic mutations and explicit rollback paths. As the server-state standard for modern frontend apps, Query is part of the TanStack open-source web app stack, alongside other libraries and tooling with devtools, guides, and community channels.