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System.Web.Caching Namespace

The System.Web.Caching namespace provides classes for caching frequently used data on the server.

This namespace includes the Cache class, a dictionary that enables you to store data objects such as hash tables and data sets. It also provides expiration functionality for those objects, and methods that enable you to add and remove the objects. You can add the objects to the cache with a dependency on other files or cache entries. In that case, the Cache object can invoke a callback method to notify your application when an object is removed from the cache.

  Class Description
Public class AggregateCacheDependency Combines multiple dependencies between an item stored in an ASP.NET application's Cache object and an array of CacheDependency objects. This class cannot be inherited.
Public class Cache Implements the cache for a Web application. This class cannot be inherited.
Public class CacheDependency Establishes a dependency relationship between an item stored in an ASP.NET application's Cache object and a file, cache key, an array of either, or another CacheDependency object. The CacheDependency class monitors the dependency relationships so that when any of them changes, the cached item will be automatically removed.
Public class DatabaseNotEnabledForNotificationException The exception that is thrown when a SQL Server database is not enabled to support dependencies associated with the SqlCacheDependency class. This class cannot be inherited.
Public class FileResponseElement Represents part of an output-cache entry, stored as a file.
Public class HeaderElement Represents a single HTTP header that is included in a response from the output cache.
Public class MemoryResponseElement Represents part of an output-cache entry that is stored in memory.
Public class OutputCache Provides programmatic access to the output-cache providers that are specified in the configuration file for a Web site.
Public class OutputCacheProvider Serves as a base class that contains abstract methods for implementing an output-cache provider.
Public class OutputCacheProviderCollection Represents the collection of output-cache providers that are configured for a Web site.
Public class ResponseElement An abstract base class that represents an HTTP response in the output cache.
Public class SqlCacheDependency Establishes a relationship between an item stored in an ASP.NET application's Cache object and either a specific SQL Server database table or the results of a SQL Server 2005 query. This class cannot be inherited.
Public class SqlCacheDependencyAdmin Performs administrative tasks required on a SQL Server database to support the SqlCacheDependency class when using polling-based dependencies. This class cannot be inherited.
Public class SubstitutionResponseElement Represents a managed delegate that can be called to insert dynamically generated output into an output-cache response.
Public class TableNotEnabledForNotificationException The exception that is thrown when a SqlCacheDependency class is used against a database table that is not enabled for change notifications.

  Interface Description
Public interface IOutputCacheEntry Defines collections of HTTP header and response elements that together make up one kind of output-cached data that ASP.NET can pass to a provider.

  Delegate Description
Public delegate CacheItemRemovedCallback Defines a callback method for notifying applications when a cached item is removed from the Cache.
Public delegate CacheItemUpdateCallback Defines a callback method for notifying applications before a cached item is removed from the cache.

  Enumeration Description
Public enumeration CacheItemPriority Specifies the relative priority of items stored in the Cache object.
Public enumeration CacheItemRemovedReason Specifies the reason an item was removed from the Cache.
Public enumeration CacheItemUpdateReason Specifies the reason that a cached item is being removed from the Cache object.
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