Contents
How does no-cache header work?
The no-cache directive means that a browser may cache a response, but must first submit a validation request to an origin server.
Is cache-control a request or response header?
Cache-control is an HTTP header that dictates browser caching behavior. When that user revisits the same website, cache-control sets the rules which determine whether that user will have those resources loaded from their local cache, or whether the browser will have to send a request to the server for fresh resources.
Where is the cache-control header?
The value of the header appears on the right of the colon. For example, “cache-control: max-age” is one such directive. Cache-control directives are considered request directives if they are used by the client in an HTTP request and response directives if they are used by the server in an HTTP response.
Is cache control a request or response header?
What does the Cache-Control header in http mean?
The Cache-Control HTTP header holds directives (instructions) for caching in both requests and responses. A given directive in a request does not mean the same directive should be in the response. Caching directives have the following rules to be valid: Case-insensitive, but lowercase is recommended.
What does no cache mean in Cache Control?
Cache-Control: No-Cache. The no-cache directive means that a browser may cache a response, but must first submit a validation request to an origin server.
Which is the best example of cache control?
In addition to cache-control, notable HTTP cache headers include: Expires – This header specifies a fixed date/time for the expiration of a cached resource. For example, Expires: Sat, 13 May 2017 07:00:00 GMT signals that the cached resource expires on May 13, 2017 at 7:00 am GMT.
What does Cache-Control : max-age = 120 mean?
For example, cache-control: max-age=120 means that the returned resource is valid for 120 seconds, after which the browser has to request a newer version.