Nov 16, 2025 · The HTTP Cache-Control header holds directives (instructions) in both requests and responses that control caching in browsers and shared caches (e.g., Proxies, CDNs).
I found that Chrome responds better to Cache-Control: no-cache (100% conditional requests afterwards). "no-store" sometimes loaded from cache without even attempting a conditional request..
Cache directive "no-cache" An explaination of the HTTP Cache-Control header The Cache-Control header is used to specify directives for caching mechanisms in both HTTP requests and responses..
Remarks This property represents the "no-cache" directive in a cache-control header field on an HTTP request or HTTP response. When the NoCache property is set to true present in a HTTP request.
