DataCacheItemVersion Class

Used to represent the version of a cached object.

Namespace: Microsoft.ApplicationServer.Caching
Assembly: Microsoft.ApplicationServer.Caching.Core (in microsoft.applicationserver.caching.core.dll)

Dim instance As DataCacheItemVersion

public class DataCacheItemVersion : IComparable<DataCacheItemVersion>
public class DataCacheItemVersion implements IComparable<DataCacheItemVersion>
public class DataCacheItemVersion implements IComparable<DataCacheItemVersion>

The DataCacheItemVersion is updated every time that the object is updated. Only the latest version of the object is stored on the cache cluster. Due to the distributed nature of the cluster, the cache client may not have the latest copy of the object. For this reason, the DataCacheItemVersion class is essential for concurrency operations. For more information, see Concurrency Models (Velocity) and Concurrency Methods (Velocity).

When using cache notifications, the DataCacheItemVersion object corresponding to an item-related cache operation can be returned to your application with the version parameter of the DataCacheNotificationCallback delegate method. For more information, see Cache Notifications (Velocity).


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Visual Studio 2010 and later, .NET Framework 4

Target Platforms

Windows 7; Windows Server 2008 R2; Windows Server 2008 Service Pack 2; Windows Vista Service Pack 2 2011-08-26