If you are still fetching data inside a useEffect hook, manually managing loading states, and storing server responses inside local component state, your frontend architecture is carrying unnecessary complexity.
Managing asynchronous API data — also called Server State — is one of the hardest problems in frontend development. Trying to handle it with traditional client-side state tools like Redux, Zustand, or plain React state often leads to repetitive, fragile, and difficult-to-maintain codebases.
That is where TanStack Query changes everything.
It is not just a data-fetching library. It acts as:
An intelligent cache
