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https://issues.apache.org/jira/browse/OGNL-20?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13125661#comment-13125661
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Maurizio Cucchiara commented on OGNL-20:
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Hi Daniel,
I know that, infact I am not going to include the benchmark stuff neither the
different cache implementations*
Anyway, your patch is very good.
Did you take a look at the new
[branch|http://svn.apache.org/viewvc/commons/proper/ognl/branches/new-cache-approach/]?
I would like to know your feedback.
* at least at the moment, but I would like to give to users the opportunity to
choice their preferred implementation (next step should be add custom
configuration support, dependency injection support, and above all logging).
> Performance - Replace synchronized blocks with ReentrantReadWriteLock
> ---------------------------------------------------------------------
>
> Key: OGNL-20
> URL: https://issues.apache.org/jira/browse/OGNL-20
> Project: OGNL
> Issue Type: Improvement
> Environment: ALL
> Reporter: Greg Lively
> Attachments: Bench Results.txt, Caching_Mechanism_Benchmarks.patch
>
>
> I've noticed a lot of synchronized blocks of code in OGNL. For the most part,
> these synchronized blocks are controlling access to HashMaps, etc. I believe
> this could be done far better using ReentrantReadWriteLocks.
> ReentrantReadWriteLock allows unlimited concurrent access, and single threads
> only for writes. Perfect in an environment where the ratio of reads is far
> higher than writes; which is typically the scenario for caching. Plus the
> access control can be tuned for reads and writes; not just a big
> synchronized{} wrapping a bunch of code.
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