. NET data cache

. NET data cache

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Cache is used in many places, but also for performance considerations, but too much reliance on caching will have a lot of problems, here to summarize a bit of data caching.

Body:

==>system.web.caching.cache;

Cacheitemupdatecallback the signature of the callback function:

public delegate void Cacheitemupdatecallback (string key, Cacheitemupdatereason reason, out object expensiveobject, out Ca Chedependency dependency, out DateTime absoluteexpiration, out TimeSpan slidingexpiration);

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. NET data cache