Cache

Description

The cache configuration provides a way to tune the setting used to setup the cache associated with various other configuration items, for example a Data Source based Data Definition.

The cache tag itself is not used as a top level configuration item but is instead embedded within other tags.

Namespace

urn:com.cohga.server.cache#1.0

Tags

cache

Properties

Name	Type	Required	Description
maxElementsInMemory	number	no	The maximum number of elements in memory, before they are evicted
maxElementsOnDisk	number	no	The maximum number of elements to hold on Disk
memoryStoreEvictionPolicy	'LRU', 'LFU', or 'FIFO'	no	Policy used to determine which items to remove, default is LRU
overflowToDisk	boolean	no	Whether to use the disk store
eternal	boolean	no	Whether the elements in the cache are eternal, i.e. never expire
timeToLiveSeconds	number	no	The default amount of time to live for an element from its creation date
timeToIdleSeconds	number	no	The default amount of time to live for an element from its last accessed or modified date
diskPersistent	boolean	no	Whether to persist the cache to disk between JVM restarts
diskExpiryThreadIntervalSeconds	number	no	How often to run the disk store expiry thread. A large number of 120 seconds plus is recommended

Sub-tags

None

Content

None

Examples

<cache:cache>
	<maxElementsInMemory>50</maxElementsInMemory>
	<memoryStoreEvictionPolicy>LRU</memoryStoreEvictionPolicy>
	<eternal>false</eternal>
	<timeToIdleSeconds>0</timeToIdleSeconds>
	<timeToLiveSeconds>300</timeToLiveSeconds>
	<overflowToDisk>true</overflowToDisk>
	<maxElementsOnDisk>2000</maxElementsOnDisk>
	<diskPersistent>false</diskPersistent>
	<diskExpiryThreadIntervalSeconds>120</diskExpiryThreadIntervalSeconds>
</cache:cache>