What is Max age?
max-age. The max-age directive states the maximum amount of time in seconds that fetched responses are allowed to be used again (from the time when a request is made). For instance, max-age=90 indicates that an asset can be reused (remains in the browser cache) for the next 90 seconds.
What does expire on mean?
1 : to breathe one’s last breath : die. 2 : to come to an end: such as. a : to exceed its period of validity The contract will expire next month.
Can you specify expiry time with @ cacheable?
You cannot specify expiry time with @cacheable notation, since @cacheable does not provide any such configurable option. However different caching vendors providing spring caching have provided this feature through their own configurations. For example NCache / TayzGrid allows you to create different cache regions with configurable expiration time.
When does revalidation of a cached document occur?
Cache validation. When a cached document’s expiration time has been reached, it is either validated or fetched again. Validation can only occur if the server provided either a strong validator or a weak validator. Revalidation is triggered when the user presses the reload button.
How does caching improve the performance of a web site?
HTTP caching The performance of web sites and applications can be significantly improved by reusing previously fetched resources. Web caches reduce latency and network traffic and thus lessen the time needed to display a representation of a resource. By making use of HTTP caching, Web sites become more responsive.
What does a cache do when a request is sent to the server?
The cache should not store anything about the client request or server response. A request is sent to the server and a full response is downloaded each and every time. A cache will send the request to the origin server for validation before releasing a cached copy.