DataCacheLocalCacheInvalidationPolicy Enumeration
Specifies the way locally cached objects should be invalidated.
Namespace: Microsoft.ApplicationServer.Caching
Assembly: Microsoft.ApplicationServer.Caching.Core (in microsoft.applicationserver.caching.core.dll)
Usage
'Usage
Dim instance As DataCacheLocalCacheInvalidationPolicy
Syntax
'Declaration
Public Enumeration DataCacheLocalCacheInvalidationPolicy
public enum DataCacheLocalCacheInvalidationPolicy
public enum class DataCacheLocalCacheInvalidationPolicy
public enum DataCacheLocalCacheInvalidationPolicy
public enum DataCacheLocalCacheInvalidationPolicy
Members
| Member name | Description |
|---|---|
| NotificationBased | Specifies that objects will stay in local cache until they are automatically invalidated by a cache notification. |
| TimeoutBased | Specifies that objects will stay in local cache until their lifetime reaches the localCacheTimeout duration specified in the DataCacheFactory constructor. |
Remarks
When using the TimeoutBased enumeration to specify local cache sync policy, once objects are downloaded to local cache, they will stay there until they reach the object timeout value specified in the DataCacheFactory constructor's localCacheTimeout parameter. When the objects reach the time-out value, they are invalidated so that each object can be refreshed from the cache cluster the next time that it is requested.
When using the NotificationBased enumeration, locally cached objects will be automatically invalidated by cache notifications. The object lifetime can only be as short as the notification polling interval specified by the DataCacheFactory constructor's pollInterval parameter.
For more information, see Expiration and Eviction (Velocity) and Cache Notifications (Velocity).
Note
In order for your application to use notifications you need to enable them on a named cache. Use the notificationsEnabled parameter with the New-Cache or Set-CacheConfig commands. For more information, see Cache Administration with PowerShell (Velocity).
Platforms
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
Change History
See Also
Reference
Microsoft.ApplicationServer.Caching Namespace
ff425062(v=azure.10).md 2011-08-26