Class CacheItem

Class that represents a cached item including its dependencies, expiration and eviction information

Inheritance

System.Object

CacheItem

Namespace:

Assembly: Alachisoft.NCache.Web.dll

Syntax

public class CacheItem : ICloneable

Examples

You can create an instance of CacheItem class and Add(String, Object) it to the Cache

object someData = new object();
CacheItem item = new CacheItem(someData);
item.SlidingExpiration = new TimeSpan(0,5,0);
item.Priority = CacheItemPriority.High;
item.ItemRemoveCallback = onRemove;
Cache cache = NCache.InitializeCache("myCache");
cache.Add("someData", item);

Name	Description
CacheItem(Object)	Constructor

Name	Description
AbsoluteExpiration	The time at which the added object expires and is removed from the cache.
AsyncItemAddCallback	A delegate that, if provided, is called when an Asynchronous request for Add Operation completes. You can use this to obtain the results of an 'AddAsync' operation.
AsyncItemUpdateCallback	A delegate that, if provided, is called when an Asynchronous request for Update Operation completes. You can use this to obtain the results of an 'InsertAsync' operation.
CreationTime	Get the cache item creation time
Dependency	The file or cache key dependencies for the item. When any dependency changes, the object becomes invalid and is removed from the cache. If there are no dependencies, this property contains a null reference (Nothing in Visual Basic).
Group	The name of the group to associate with the cache item. All cache items with the same group name are logically grouped together.
IsResyncExpiredItems	Gets/Sets a value indicating whether the object when expired will cause a re-fetch of the object from the master datasource. (Resync Expired Items)
ItemRemoveCallback	A delegate that, if provided, is called when an object is removed from the cache. You can use this to notify applications when their objects are deleted from the cache.
ItemUpdateCallback	A delegate that, if provided, is called when an object is updated in the cache. You can use this to notify applications when their objects are updated in the cache.
LastModifiedTime	Get the cache item last modified time
NamedTags	Get or set the named tags
Priority	The relative cost of the object, as expressed by the enumeration. The cache uses this value when it evicts objects; objects with a lower cost are removed from the cache before objects with a higher cost.
ResyncProviderName	Gets/Sets Provider name for re-synchronization of cache
SlidingExpiration	The interval between the time the added object was last accessed and when that object expires. If this value is the equivalent of 20 minutes, the object expires and is removed from the cache 20 minutes after it is last accessed.
SubGroup	The name of the sub-group within a group. This hierarchical grouping gives more control over the cache items.
SyncDependency	CacheSyncDependency for this item.
Tags	Get or set the tags
Value	The actual object provided by the client application.
Version	Get or Set the cache item version

Name	Description
Clone()	Creates a shallow copy of CacheItem
SetCacheDataNotification(CacheDataNotificationCallback, EventType)	You can use this to notify applications when their objects are updated or removed in the cache. Callbacks can be registered against for the key the items is inserted to. Callback are overridden for the same if called again. is not supported yet.
SetCacheDataNotification(CacheDataNotificationCallback, EventType, EventDataFilter)	You can use this to notify applications when their objects are updated or removed in the cache. Callbacks can be registered against for the key the items is inserted to. To register different for different , you can call this function multiple times with a different . Callback are overridden for the same if called again. is not supported yet.