cache-control

问题 I have a page with another html page in iframe. In this iframe, i put this header tag <META http-equiv="Pragma" content="no-cache"> <META HTTP-EQUIV="Expires" CONTENT="-1"> <meta http-equiv="cache-control" content="no-cache" /> But chrome still cache it, when iframe content changed, hit f5 button but chrome still load cached version, not new version. Please tell me how to pevent google chrome cache this iframe. 回答1: Set the correct expiry headers in the HTTP response from your server. They

问题 I have a page with another html page in iframe. In this iframe, i put this header tag <META http-equiv="Pragma" content="no-cache"> <META HTTP-EQUIV="Expires" CONTENT="-1"> <meta http-equiv="cache-control" content="no-cache" /> But chrome still cache it, when iframe content changed, hit f5 button but chrome still load cached version, not new version. Please tell me how to pevent google chrome cache this iframe. 回答1: Set the correct expiry headers in the HTTP response from your server. They

问题 I've read about single cache-control header value. To test what I learned, I opened facebook and inspect. This is the Cache-Control response header I get: cache-control:private, no-cache, no-store, must-revalidate I am confused what this header actually tells, because it contains 4 values at once. So what happens with the resource send through the network, if it contains such header? EDIT: no-store says, "do not store at all, not in private not public caches", and no-cache says "yeees you can

问题 I've read about single cache-control header value. To test what I learned, I opened facebook and inspect. This is the Cache-Control response header I get: cache-control:private, no-cache, no-store, must-revalidate I am confused what this header actually tells, because it contains 4 values at once. So what happens with the resource send through the network, if it contains such header? EDIT: no-store says, "do not store at all, not in private not public caches", and no-cache says "yeees you can

问题 I've read about single cache-control header value. To test what I learned, I opened facebook and inspect. This is the Cache-Control response header I get: cache-control:private, no-cache, no-store, must-revalidate I am confused what this header actually tells, because it contains 4 values at once. So what happens with the resource send through the network, if it contains such header? EDIT: no-store says, "do not store at all, not in private not public caches", and no-cache says "yeees you can

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . Improve this question I am debugging js code on localhost and I need to prevent the caching of files by the browser. I can't use a timestamp appended to the url because it erases chrome debugger breakpoints. Usually I don't have to refresh the cache, but everyone in a while I do. It is a large problem because I

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . Improve this question I am debugging js code on localhost and I need to prevent the caching of files by the browser. I can't use a timestamp appended to the url because it erases chrome debugger breakpoints. Usually I don't have to refresh the cache, but everyone in a while I do. It is a large problem because I

问题 Assume browser default settings, and content is sent without expires headers. user visits website, browser caches images etc. user does not close browser, or refresh page. user continues to surf site normally. assume the browse doesn't dump the cache for any reason. The browser will cache images etc as the user surfs, but it's unclear when it will issue a conditional GET request to ask about content freshness (apart from refreshing the page). If this is a browser specific setting, where can I

问题 Assume browser default settings, and content is sent without expires headers. user visits website, browser caches images etc. user does not close browser, or refresh page. user continues to surf site normally. assume the browse doesn't dump the cache for any reason. The browser will cache images etc as the user surfs, but it's unclear when it will issue a conditional GET request to ask about content freshness (apart from refreshing the page). If this is a browser specific setting, where can I

问题 RFC 5861 proposes the Cache-Control extensions stale-while-revalidate: When present in an HTTP response, the stale-while-revalidate Cache- Control extension indicates that caches MAY serve the response in which it appears after it becomes stale, up to the indicated number of seconds. and stale-if-error: The stale-if-error Cache-Control extension indicates that when an error is encountered, a cached stale response MAY be used to satisfy the request, regardless of other freshness information.