What is the last modified header?

What is the last modified header?

The Last-Modified response HTTP header contains a date and time when the origin server believes the resource was last modified. It is used as a validator to determine if the resource is the same as the previously stored one.

What does the if-modified-since header do?

The If-Modified-Since HTTP header indicates the time for which a browser first downloaded a resource from the server. This helps determine whether or not the resource has changed since the last time it was accessed.

What is date last modified?

The “Last Time Modified” date refers to the last time a document or media file was modified. This information is gathered from metadata within the document or from the website’s servers.

How do I set up Cache-Control headers?

To use Cache-Control headers, choose Content Management | Cache Control Directives in the administration server. Then, using the Resource Picker, choose the directory where you want to set the headers. After setting the headers, click ‘OK’.

Does nginx cache by default?

By default, NGINX Plus caches all responses to requests made with the HTTP GET and HEAD methods the first time such responses are received from a proxied server. As the key (identifier) for a request, NGINX Plus uses the request string.

What are the If-modified-since and if-none-match header used for?

The If-Modified-Since header is used to specify the time at which the browser last received the requested resource. The If-None-Match header is used to specify the entity tag that the server issued with the requested resource when it was last received.

What is last accessed date?

The last access date stamp refers to just about any activity that a user or even the computer system itself might do to a file. Anything that might update a file’s last modified or creation dates, for instance, will generally also update the last access date.