How long does it take for ajax requests to expire?

AJAX requests have no fixed expiration time: "Asynchronous JavaScript and XML" is a technology for sending asynchronous requests on web pages. It uses JavaScript to send requests to the server and receive responses without refreshing the entire page.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

AJAX requests do not have a fixed expiration time.

AJAX (Asynchronous JavaScript and XML) is a technology for sending asynchronous requests on web pages. It uses JavaScript to send requests to the server and receive responses without refreshing the entire page.

The expiration time of AJAX requests is set by the server, usually controlled through the "Cache-Control" and "Expires" fields in the HTTP header. The server can specify an expiration time or cache policy to determine when data should be re-fetched.

If the server does not set an expiration time or cache policy, then each time an AJAX request is initiated, a request will be sent to the server and the latest data will be obtained.

In front-end development, you can control the expiration time of the request by setting the cache parameters of the AJAX request. Common caching parameters include "cache", "ifModified" and "timeStamp", etc. For specific usage, please refer to the documentation of the relevant AJAX library or framework.

In short, the expiration time of AJAX requests is set by the server and can be controlled through front-end code.

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