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PublisherChapter 24. The System.Web.Caching Namespace
The System.Web.Caching
namespace includes types used for ASP.NET data caching. The
Cache class is the focal point of this namespace;
it contains a collection of cached objects and allows you to set
expiration policies and dependencies for each item in the cache. The
CacheDependency class encapsulates a cache
dependency and allows you to link the validity of a cache item to
another item or a file on the web server. The
CacheItemRemovedCallback delegate allows you to
respond when an object is dropped from the cache. Both types work in
conjunction with the Cache class. Together, they
allow you to implement sophisticated data caching. Figure 24-1 shows the types in this namespace.
Figure 24-1. The System.Web.Caching namespace
ASP.NET also supports page caching, which stores entire compiled
pages for automatic reuse. To configure settings for page caching,
you must use the System.Web.HttpCachePolicy class.
