CODEWITHSUNDEEP
cachingliferayehcache
Chirag Patel
Chirag Patel

Reputation: 512

Liferay custom entity caching

I am using liferay 6.1 version.

I have created custom entities for portlet using service builder. I want to cache that custom entities.

I have set following properties in my portal-ext.properties to enable cache.

ehcache.statistics.enabled=true
value.object.entity.cache.enabled=true
value.object.finder.cache.enabled=true

velocity.engine.resource.manager.cache.enabled=true
layout.template.cache.enabled=true

net.sf.ehcache.configurationResourceName=/custom_cache/hibernate-clustered.xml

log4j.logger.net.sf.ehcache=DEBUG
log4j.logger.net.sf.ehcache.config=DEBUG 
log4j.logger.net.sf.ehcache.distribution=DEBUG
log4j.logger.net.sf.ehcache.code=DEBUG

I created ehcache.xml file to override the ehcache-failsafe.xml to configure my custom entities so that it can enable for caching.

my ehcache.xml file is in my classpath [classpath:liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/classes].

<diskStore path="java.io.tmpdir/ehcache"/>

<defaultCache
        maxElementsInMemory="10000"
        eternal="false"
        timeToIdleSeconds="120"
        timeToLiveSeconds="120"
        overflowToDisk="true"
        maxElementsOnDisk="10000000"
        diskPersistent="false"
        diskExpiryThreadIntervalSeconds="120"
        memoryStoreEvictionPolicy="LRU"
        />

<cache
    eternal="false"
    maxElementsInMemory="10000"
    name="com.pr.test.model.impl.StudentImpl"
    overflowToDisk="false"
    timeToIdleSeconds="600"
    timeToLiveSeconds="300"
    statistics="true"
    copyOnRead="true"
    copyOnWrite="true"
    clearOnFlush="true"
    transactionalMode="off"
    />

Also create hibernate-clustered.xml file under src path [/docroot/WEB-INF/src] which is same as my ehcache.xml file.

since I am using service builder, cache-enable="true" is enough to cache the entities?

I use Jconsole to monitor the cache hits, But what the problem is the percentage for cache Misses is more than cache hits. Below is my statistics for caching :

cashing statistics![][1]

Any help will be appreciated.

Upvotes: 2

Views: 3777

Answers (1)

Haris
Haris

Reputation: 1141

Caching is enabled by default for services built using liferay service builder.

I believe none of the steps mentioned above are required as cache is default enabled.

Below properties are set to true in default portal.properties and applies to all entities, not just for custom entities.

value.object.entity.cache.enabled=true
value.object.finder.cache.enabled=true

You can open *PersistenceImpl.java class for your custom entities to observe the caching code. Debugging this class could give you details on why its not hitting cache.

For example, calling API with cache off argument won't hit cache.

Upvotes: 4

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