User development,
A new message was posted in the thread "Flushing data to disk":
http://community.jboss.org/message/526942#526942
Author : Mircea Markus
Profile :
http://community.jboss.org/people/mircea.markus
Message:
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you should have eviction enabled and a cache loader with passivation.
<eviction wakeUpInterval="500">
<default algorithmClass="org.jboss.cache.eviction.LRUAlgorithm"
eventQueueSize="200000">
<property name="maxNodes" value="5000"/>
<property name="timeToLive" value="1000"/>
</default>
<region name="/org/jboss/data1">
<property name="timeToLive" value="2000"/>
</region>
<region name="/org/jboss/data2"
algorithmClass="org.jboss.cache.eviction.FIFOAlgorithm"
eventQueueSize="100000">
<property name="maxNodes" value="3000"/>
<property name="minTimeToLive" value="4000"/>
</region>
</eviction>
<!--
Cache loaders.
If passivation is enabled, state is offloaded to the cache loaders ONLY when
evicted. Similarly, when the state
is accessed again, it is removed from the cache loader and loaded into memory.
Otherwise, state is always maintained in the cache loader as well as in memory.
Set 'shared' to true if all instances in the cluster use the same cache
loader instance, e.g., are talking to the
same database.
-->
<loaders passivation="true" shared="false">
<preload>
<node fqn="/org/jboss"/>
<node fqn="/org/tempdata"/>
</preload>
<!--
we can have multiple cache loaders, which get chained
-->
<loader class="org.jboss.cache.loader.JDBCCacheLoader"
async="true" fetchPersistentState="true"
ignoreModifications="true" purgeOnStartup="true">
<properties>
cache.jdbc.table.name=jbosscache
cache.jdbc.table.create=true
cache.jdbc.table.drop=true
cache.jdbc.table.primarykey=jbosscache_pk
cache.jdbc.fqn.column=fqn
cache.jdbc.fqn.type=VARCHAR(255)
cache.jdbc.node.column=node
cache.jdbc.node.type=BINARY
cache.jdbc.parent.column=parent
cache.jdbc.driver=org.hsqldb.jdbcDriver
cache.jdbc.url=jdbc:hsqldb:mem:jbosscache
cache.jdbc.user=sa
cache.jdbc.password=
</properties>
<!-- alternatively use a connection from a datasorce, as per the code
sample below-->
<!--<properties>-->
<!--cache.jdbc.datasource=AllSampleDS-->
<!--cache.jdbc.table.name=jbosscache-->
<!--cache.jdbc.table.create=true-->
<!--cache.jdbc.table.drop=true-->
<!--</properties>-->
<singletonStore enabled="true"
class="org.jboss.cache.loader.SingletonStoreCacheLoader">
<properties>
pushStateWhenCoordinator=true
pushStateWhenCoordinatorTimeout=20000
</properties>
</singletonStore>
</loader>
</loaders>
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