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https://issues.apache.org/jira/browse/OPENJPA-138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12471535
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Kevin Sutter commented on OPENJPA-138:
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To give everyone a heads up on the type of changes I plan to introduce via this
Issue... Please comment if you see a problem with any of these approaches.
Our current OpenJPA test bucket still passes, but that doesn't always mean that
these are safe...
o Cache the TransactionManager in JNDIManagedRuntime
o Cache the Class instances for Configurations.newInstance()
o Cache the Type hashcodes for OpenJPAId.hashcode()
o Cache the Type's ClassLoader instances in ObjectValue.newInstance()
o Cache the assignable "from" types and associated value "to" types in
FetchConfigurationImpl.isAssignable
o Clean up the close/IllegalStateException processing in AbstractBrokerFactory
and BrokerImpl (gate with TRACE)
o Cache the assignable "from" types and associated value "to" types in
BrokerImpl.newObjectId()
o Cache the brokers being created along with appropriate cleanup and reopen
processing in AbstractBrokerFactory (and BrokerImpl)
The details can be found with the SVN commit. Hopefully, this gives enough of
a flavor to possibly raise any red flags...
Thanks!
Kevin
> More performance improvements for OpenJPA (lib and kernel)
> ----------------------------------------------------------
>
> Key: OPENJPA-138
> URL: https://issues.apache.org/jira/browse/OPENJPA-138
> Project: OpenJPA
> Issue Type: Sub-task
> Components: kernel, lib
> Reporter: Kevin Sutter
> Assigned To: Kevin Sutter
>
> As we continue pushing OpenJPA though its paces, we're finding a few
> additional tweaks that help with the performance throughput. This Issue will
> be used to track this next set of improvements. I'll document more detail as
> we determine the correct fixes. Several of the changes relate to caching of
> objects in a hashmap instead of re-creating the objects every time we call
> some of these methods.
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