The time, in seconds, that the object has been in a proxy cache.
Cache-Control: string
Directives for caching mechanisms in both requests and responses.
Clear-Site-Data: string
Clears browsing data (e.g. cookies, storage, cache) associated with the requesting website.
Expires: string
The date/time after which the response is considered stale.
Pragma: string
Implementation-specific header that may have various effects anywhere along the request-response chain. Used for backwards compatibility with HTTP/1.0 caches where the Cache-Control header is not yet present.