Specifies the relative priority of items stored in the [!:Cache].
Namespace: Alachisoft.NCache.RuntimeAssembly: Alachisoft.NCache.Runtime (in Alachisoft.NCache.Runtime.dll) Version: 4.1.0.0 (4.1.0.0)
Syntax
| C# |
|---|
[SerializableAttribute] public enum CacheItemPriority |
| Visual Basic |
|---|
<SerializableAttribute> _ Public Enumeration CacheItemPriority |
| Visual C++ |
|---|
[SerializableAttribute] public enum class CacheItemPriority |
Members
| Member name | Value | Description | |
|---|---|---|---|
| Low | -2 | Cache items with this priority level are the most likely to be deleted from the cache as the server frees system memory. | |
| BelowNormal | -1 | Cache items with this priority level are more likely to be deleted from the cache as the server frees system memory than items assigned a Normal priority. | |
| Normal | 0 | Cache items with this priority level are likely to be deleted from the cache as the server frees system memory only after those items with Low or BelowNormal priority. This is the default. | |
| AboveNormal | 1 | Cache items with this priority level are less likely to be deleted as the server frees system memory than those assigned a Normal priority. | |
| High | 2 | Cache items with this priority level are the least likely to be deleted from the cache as the server frees system memory. | |
| NotRemovable | 3 | The cache items with this priority level will not be deleted from the cache as the server frees system memory. | |
| Default | 4 | The default value for a cached item's priority is Normal. |
Remarks
When the application's cache is full or runs low on memory, the [!:Cache] selectively purges
items to free system memory. When an item is added to the [!:Cache], you can assign it a
relative priority compared to the other items stored in the [!:Cache]. Items you assign higher
priority values to are less likely to be deleted from the [!:Cache] when the server is processing
a large number of requests, while items you assign lower priority values are more likely to be
deleted. The default is Normal.
Examples
The following example demonstrates how to insert an item in a [!:Cache] object with a
CacheItemPriority of High.
CopyC#
CopyC#NCache.Cache.Insert("DSN", connectionString, null, d, t, CacheItemPriority.High, onRemove); Cache.Insert("DSN", connectionString, null, d, t, CacheItemPriority.High, onRemove);
See Also
