TanStack Query (formerly React Query) is a library for managing asynchronous state, server-state utilities, and data fetching across various JavaScript frameworks like React, Vue, Solid, Svelte, and Angular. It simplifies the process of fetching, caching, updating, and synchronizing server state in web applications without relying on global state management solutions.
It's designed for developers who need to efficiently handle data from APIs, providing features like automatic refetching, caching, pagination, infinite scrolling, optimistic updates, and server-side rendering support. By abstracting away much of the complexity involved in data fetching and synchronization, TanStack Query helps improve application performance, developer experience, and code maintainability.