Question

_cache.Insert(cacheKey, userList, null,
 Cache.NoAbsoluteExpiration,
 new TimeSpan(0, 15, 0),
 CacheItemPriority.High, null);

My code above doesn’t seem to be expiring the cache after 3 minutes, the userList object pulls data from the database that was updated, but the cache doesn’t expire it after 15 minutes.

What is wrong?

Answer 1

You are explicitly setting the cache to never expire by using Cache.NoAbsoluteExpiration. You want to use Cache.NoSlidingExpiration instead:

When used, this field sets the slidingExpiration parameter to the
TimeSpan.Zero field, which has a constant value of zero. The cached
item expires in accordance with the absoluteExpiration parameter
associated with the Insert or Add method call.