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Query Caching [message #1700413] Thu, 02 July 2015 13:04
Ankit Jain is currently offline Ankit JainFriend
Messages: 1
Registered: July 2015
Junior Member
I am working on EclipseLink Query caching in very complex system.


I have enabled QueryMonitoring and Performance Monitoring by adding below properties in persistence.xml:

<property name="eclipselink.profiler" value="QueryMonitor" />
<property name="eclipselink.profiler" value="PerformanceMonitor" />

and got below Query Montior log:
com.xxx.yy.zz.jpa.UserInfoEntity-UserInfo.nameSearch 0 4

after that In order to achieve Query caching I have added below property in persistence.xml:

<property name="hibernate.cache.use_query_cache" value="true"/>

and got same Query Montior log again:
com.xxx.yy.zz.jpa.UserInfoEntity-UserInfo.nameSearch 0 4

then in "nameSearch" Named query, I have added below hints as well:

hints={@QueryHint(name="eclipselink.refresh", value="true"), @QueryHint(name="eclipselink.cache-usage", value="CheckCacheThenDatabase")}

after making above changes "UserInfoEntity-UserInfo.nameSearch" log got disappears for the Query Monitor logs.

Can someone tell me, Am I doing right configuration to achieve Query Caching or not?

If yes, then how can I identify that query got cached or not?

Thanks in advance...


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