What does a library for managing server state provide — what are its advantages and conveniences?

A library for managing server state helps efficiently work with data received from the server and addresses several important tasks:

• Data caching: allows storing received data locally to avoid repeated requests and speed up the application.
• Automatic updating: when data on the server changes, the library can automatically update the state in the application.
• Managing loading and errors: provides convenient mechanisms for tracking loading status and handling errors.
• Request optimization: can merge or cancel requests to reduce load on the server and network.
• Data synchronization: helps maintain data consistency between different components and tabs.

Example: React Query, RTK Query, SWR — all simplify working with server state, freeing developers from manually writing caching, updating, and error handling logic.