Absolute and Sliding expiration in .NET

Question

Hi I want to know that what is Absolute and Sliding expiration in .NET?

Jignesh Trivedi · Answer

hi These two are Time based expiration strategies Absolute Expiration allows us to specify the duration of the cache starting from the time the cache is activated. Sliding Expiration specifies that the cache will expire if a request is not made within a specified duration.Sliding expiration policy is useful whenever you have a large number of items that need to be cached because this policy enables you to keep only the most frequently accessed items in memory. please refer http://msdn.microsoft.com/en-us/library/aa478965.aspx to know more about caching.. hope this help.

Satyapriya Nayak · Answer

Hi Deepak Absolute and sliding expiration are two Time based expiration strategies. Absolute Expiration: Cache in this case expires at a fixed specified date or time. Example: Cache. Insert(ABC ds null DateTime.Now.AddMinutes(1) Cache.NoSlidingExpiration); The cache is set to expire exactly two minutes after the user has retrieved the data. Sliding Expiration: the cache duration increases in this case by the specified sliding expiration value every time the page is requested. More a page is requested it will remain in cache whereas a less requested page will not remain in cache. Example: Cache.Insert(ABC ds null Cache.NoAbsoluteExpiration TimeSpan.FromMinutes(1)); Thanks