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https://issues.apache.org/jira/browse/WW-5035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yasser Zamani resolved WW-5035.
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Resolution: Fixed
PR got merged, cherry picked into 2.6 and successfully built to both. Thanks!
> Provide mechanism to clear OgnlUtil caches
> ------------------------------------------
>
> Key: WW-5035
> URL: https://issues.apache.org/jira/browse/WW-5035
> Project: Struts 2
> Issue Type: Improvement
> Components: Core
> Environment: All
> Reporter: James Chaplin
> Priority: Minor
> Labels: pull-request-available
> Fix For: 2.5.21, 2.6
>
>
> Hello Apache Struts Team.
> This Jira proposes to provide some cache-clearing methods for the OgnlUtil
> class, as well as methods to check the current cache element count.
> These methods will allow applications to clear the OgnlUtil expression cache
> and BeanInfo cache when necessary (using application-specific usage profile).
> Currently the only OgnlUtil cache control available to applications is to
> enable/disable the OgnlUtil expressionCache
> ({{struts.ognl.enableExpressionCache flag}}).
> Using the new methods applications that have resource (memory) leak issues
> with the caches may be able to use the caches to gain some performance
> benefits, while periodically clearing them to recover memory resources.
> Application developers can determine how frequently (e.g. hourly, daily) such
> cache clearing is needed.
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