Which response header tells the client and intermediaries that the response is not to be cached anywhere?

Which response header tells the client and intermediaries that the response is not to be cached anywhere?

Cache-Control Header
Cache-Control Header Indicates that resource is cacheable only by the client and the server, no intermediary can cache the resource.

What is the access-control-max-age HTTP header?

The Access-Control-Max-Age HTTP header is a response header that gives the time for which results of a CORS preflight request that checks to see if the CORS protocol is understood and a server is aware using specific methods and headers, can be cached.

How do I set cache-control without store?

To use cache-control in HTML, you use the meta tag, e.g. The value in the content field is defined as one of the four values below. HTTP 1.1. Allowed values = PUBLIC | PRIVATE | NO-CACHE | NO-STORE.

Which CORS header indicates how long a preflight request should be cached?

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.

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.

When to ignore the Expires header in Cache Control?

The expires header is ignored when a cache-control header containing a max-age directive is present. ETag – A response header that identifies the version of served content according to a token – a string of characters in quotes, e.g., “675af34563dc-tr34” – that changes after a resource is modified.

When to use HTTP cache headers for static content?

HTTP cache headers for images and other static content In almost all cases, static assets like images, JS, and CSS, do not change on a per-user basis. Thus they can be easily cached on the browser and on intermediate proxies and can be cached for a very long duration.

What does it mean when cache age is 1 year?

The header is open to interpretation – a 1 year cache could mean “this asset expires in a year, at which point you should fetch a fresh copy from the server”. Or it could mean “this asset never expires, so don’t ever bother downloading this file again”.