React Query |TanStack Query:Server State Management in React

Explore the syntax of useQuery in TanStack Query, using a unique key and an async fetch function that returns a promise, with optional options like stale time and cache time.

Explore the useQuery return object in React Query, examining query result state, fetch status, and data handling, including automatic refetch on focus and interpreting loading, error, and success.

Unpack using query keys as arrays and single strings in React Query to fetch a single user with a dynamic id, showing UI updates as keys change.

Rewrite the single user fetch using a query keys array, access the id inside the fetch function, and destructure the query key to use second index as the user id.

Learn how query functions fetch and produce data for components by returning promises and handling asynchronous API calls, database fetches, and other tasks, with arguments supplied by the query key.

Understand how Axios handles errors with React Query, throwing on non-200 responses and moving the query hook to the error state, while deciding when to use Axios for server-side errors.

Explore how default values in React Query provide predefined settings when explicit values are not provided, and how to configure them at the global level or the per-query level.

Install and configure the React Query devtools to visualize queries and default values, using npm, then wrap your main entry with the devtools and set the initial open prop.

Explore how to customize server state behavior in React Query by adjusting the global query client and per-query stale time, controlling when data becomes outdated and refetched.

Discover how React Query caches data and uses cache time to remove unused data, balancing memory use with data freshness, with a default of five minutes.

Use mutations to change data with post, put, or delete requests via useMutation, tracking idle, loading, success, and error states while separating mutation logic and invalidating queries to refresh data.

Demonstrates using the mutate async function for HTTP requests to create, delete, or update documents, with try/catch handling and redirect after submission.

Understand query invalidation in React Query and keep client data in sync after mutations. Use exact query keys and the useMutation onSuccess callback to refresh only what's needed.

Shows how to use TanStack Query to invalidate the post list after a successful mutation, refreshing all posts without a manual page refresh.