Wouldn't you need to modify Cache-Control? >>If there is a Cache-Control header with the max-age or s-maxage directive in the response, the Expires header is i

Wouldn't you need to modify Cache-Control? >>If there is a Cache-Control header with the max-age or s-maxage directive in the response, the Expires header is ignored. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Expires https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Ex... Edit: Also I'm not sure that is the relevant one? Reddit sets Cache-Control to "private, max-age=3600 [seconds]", but it definitely reloads the content if I back up in less than an hour.