React Query Everything in React 2025
🔍 React Query Everything in React 2025
React Query (now known as TanStack Query) is a powerful tool for data fetching, caching, synchronizing, and updating in React apps. Here's everything you need to get started with React Query in 2025.
1. Install React Query
npm install @tanstack/react-query
2. Setup QueryClient & Provider
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
const queryClient = new QueryClient();
function App() {
return (
);
}
3. Fetch API Data with useQuery
import { useQuery } from '@tanstack/react-query';
function MyComponent() {
const { data, error, isLoading } = useQuery({
queryKey: ['posts'],
queryFn: () => fetch('/api/posts').then(res => res.json())
});
if (isLoading) return Loading...;
if (error) return Error fetching data;
return (
{data.map(post => (
- {post.title}
))}
);
}
4. Handle Errors and Loading State
// Handled automatically by useQuery
// You can show spinner or error UI based on isLoading and error
5. Enable Devtools for Debugging
import { ReactQueryDevtools } from '@tanstack/react-query-devtools';
function App() {
return (
);
}
6. Use useMutation for CRUD Operations
import { useMutation } from '@tanstack/react-query';
const mutation = useMutation({
mutationFn: (newPost) => fetch('/api/posts', {
method: 'POST',
body: JSON.stringify(newPost),
})
});
7. Pagination, Polling, and Infinite Scroll
// Pagination via `keepPreviousData`
// Polling with `refetchInterval`
// Infinite Scroll via `useInfiniteQuery` and Intersection Observer
8. Optimize with Stale Time and Garbage Collection
useQuery({
queryKey: ['data'],
queryFn: fetchData,
staleTime: 1000 * 60, // 1 min
gcTime: 1000 * 60 * 5, // 5 min
});
9. Host React Query App on Server
// Build and deploy your app to Vercel, Netlify, or your server
npm run build
📘 That's the complete overview of React Query (TanStack Query) in 2025. Use it to make your API integration smooth, fast, and clean.