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https://issues.apache.org/jira/browse/GROOVY-7478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jochen Theodorou updated GROOVY-7478:
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Labels: usertask (was: )
> Ability to Cache Patterns
> -------------------------
>
> Key: GROOVY-7478
> URL: https://issues.apache.org/jira/browse/GROOVY-7478
> Project: Groovy
> Issue Type: New Feature
> Components: class generator
> Affects Versions: 2.3.9, 2.4.3
> Reporter: Patrick Julien
> Priority: Minor
> Labels: usertask
>
> It seems {{InvokeHelper}} cannot cache the results of {{Pattern#compile}} at
> all when running embedded Groovy scripts.
> When this is combined with regular expressions and a somewhat large number
> scripts, there is a very large hit to performance when these scripts need to
> be constantly run.
> Using Java 8u40. and close to 10k scripts, the same 10k scripts are properly
> cached and reused but {{Pattern}} objects are constantly re-compiled.
> I am using a {{ConcurrentHashMap}} from a custom implementation of
> {{InvokeHelper}} at the moment to workaround the problem but having a
> supported way of controlling this behavior would be welcomed.
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