June 2002
Intermediate to advanced
816 pages
28h 12m
English
Content preview from ASP.NET in a Nutshell
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Chapter 23. The System.Web.Caching Namespace
The System.Web.Caching namespace includes types used
for ASP.NET 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.
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.
Figure 23-1 shows the
types in this namespace.
Figure 23-1. The System.Web.Caching namespace
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