Store Header Release For Free

No-cache: This directive tells the browser that the content should not be cached, and it must be requested from the server each time the page is loaded. no-store: This directive is similar to no-cache, but it also tells caches not to store the content on disk.

Caching a versioned static resource Note that, in practice, the browser cache is volatile and will not keep a resource for such a long time. The HTTP header Cache-Control: max-age=2592000 then indicates that the resource is valid for a duration of 2,592,000 seconds (or about 1 month).

The Cache-Control header can appear in both HTTP responses and HTTP requests. You can configure your server to append the Cache-Control header to the response by specifying which directives to use.

The Access-Control-Max-Age response header indicates how long the results of a preflight request (that is the information contained in the Access-Control-Allow-Methods and Access-Control-Allow-Headers headers) can be cached.

If there is no Cache-Control header and no Expires header, but there is a Last-Modified header (which most web servers send by default for static assets), most browsers will use heuristic freshness to determine how long to cache that asset for.

Specifying no-cache or max-age=0 indicates that clients can cache a resource and must revalidate each time before using it. This means HTTP request occurs each time, but it can skip downloading HTTP body if the content is valid.

Cache-control: max-age It is the maximum amount of time specified in the number of seconds. For example, max-age=90 means that a HTTP response remains in the browser as a cached copy for the next 90 seconds before it can be available for reuse.

Max-age. The max-age=N response directive indicates that the response remains fresh until N seconds after the response is generated. Indicates that caches can store this response and reuse it for subsequent requests while it's fresh.