What happens if there is no Cache-Control header?
If you don’t add a Cache-Control header because the response is not intended to be cached, that could cause an unexpected result. Adding no-cache to the response causes revalidation to the server, so you can serve a fresh response every time — or if the client already has a new one, just respond 304 Not Modified .
What happens for an HTTP response if it has both the Expires and Cache-Control headers set?
If both Expires and max-age are set max-age will take precedence. While Cache-Control and Expires tells the browser when to next retrieve the resource from the network a few additional headers specify how to retrieve the resource from the network. These types of requests are known as conditional requests.
How do I set Cache-Control HTTP header?
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’.
Should I use cache-control no-store?
The intermediate cache server will decide whether using the saved content for following request. However, if “no-store” is in the response, the intermediate cache sever is not supposed to store the content. So, it is safer.
Should I use Max age or expires?
Quick Answer: Expires sets an expiry date for when a cookie gets deleted. Max-age sets the time in seconds for when a cookie will be deleted (use this, it’s no longer 2009) Internet Explorer (ie6, ie7, and ie8) does not support “max-age”, while (mostly) all browsers support expires.
Which directive of cache-control header of HTTP response indicates that resource is not cacheable?
no-cache/no-store
Cache-Control Header
| Sr.No. | Directive & Description |
|---|---|
| 1 | Public Indicates that resource is cacheable by any component. |
| 2 | Private Indicates that resource is cacheable only by the client and the server, no intermediary can cache the resource. |
| 3 | no-cache/no-store Indicates that a resource is not cacheable. |
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.
What is Cache-Control No-store?
Cache-Control: No-Store The no-store directive means browsers aren’t allowed to cache a response and must pull it from the server each time it’s requested. This setting is usually used for sensitive data, such as personal banking details.
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.
Which is an example of an HTTP cache header?
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 it mean to have no cache in http?
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: no-cache Cache-Control: no-cache, max-age=0 Specifications
What does no store mean in Cache Control?
Cache-Control: No-Store The no-store directive means browsers aren’t allowed to cache a response and must pull it from the server each time it’s requested. This setting is usually used for sensitive data, such as personal banking details.