What is Max-age in cache-control?
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.
What is cache-control max-age 31536000?
It’s standard practice to set a Cache-Control: max-age=31536000 on assets which are expected not to change, such as images. This header instructs the browser to cache the asset for 31536000 seconds, which is one year.
What’s the difference between cache-control max-age 0 and no-cache?
When max-age=0 is used, the browser will use the last version when viewing a resource on a back/forward press. If no-cache is used, the resource will be refetched.
What is cache expiration?
The value of the Expires date/time can cause the following specific cache behavior: When the Expires date is equal to the Date header value, the response is considered to be expired. When a response has an Expires header field with a date/time that is in the future, then that response is considered “cacheable”.
What is Max-age header?
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.
How long is Max-age 31536000?
one year
Max-age greater than 31536000 (one year) makes little sense, and informally this is considered a reasonable maximum value.
How do I change my Cache-Control max-age?
Cache-Control: max-age= This directive tells the browser or intermediary cache how long the response can be used from the time it was requested. A max-age of 3600 means that the response can be used for the next 60 minutes before it needs to fetch a new response from the origin server.
What is cache memory in C#?
It is a type of memory that is relatively small but can be accessed very quickly. It essentially stores information that is likely to be used again. For example, web browsers typically use a cache to make web pages load faster by storing a copy of the webpage files locally, such as on your local computer.
What’s the difference between Max age and 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.
How long is Max age 31536000?
How do I change my Cache-Control max age?
What is Max age header?
What is the difference between Cache-Control max-age and expires?
They can be used to accomplish the same thing but the data value for Expires is an HTTP date whereas Cache-Control max-age lets you specify a relative amount of time so you could specify “X hours after the page was requested”.
What is the maximum age limit for cache-control?
If you are using a CDN (Cloud Delivery Network) I recommend to use Cache-Control with a max-age time in seconds. For example Cache-Control: max-age=604800. This prevents request-peaks to your origin-server: With “Expires Wed, 30 Oct 20xx 04:37:07 GMT” all browsers will request you at the same time. Show activity on this post.
What is the difference between standard and extension cache control?
Standard Cache-Control directives that can be used by the client in an HTTP request. Standard Cache-Control directives that can be used by the server in an HTTP response. Extension Cache-Control directives are not part of the core HTTP caching standards document.
What’s the difference between expires and cache-control headers?
What’s the difference between Expires and Cache-Control headers? Show activity on this post. Cache-Control was introduced in HTTP/1.1 and offers more options than Expires.