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Request Keys

React Request's two most useful features are request deduplication and response caching.

Both of these features are powered by a system called "request keys," which are strings that allow React Request to determine if two requests are to be considered identical.

What is a Request Key

A request key is a string that is created from the props that you pass to Fetch.

The key is composed of these pieces of information:

  • url
  • method
  • body

How is it Used

Request Deduplication

When two or more <Fetch/> components with the same key attempt to fire off a request, only one HTTP request will be sent off. When the response is returned, all of the components will receive that single response.

For more, see the guide on request deduplication.

Response Caching

Anytime a response is received for a request, it is stored in an internal cache. If a subsequent request is attempted with the same key, then the cached version will be returned instead.

For more, see the guide on response caching.