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https://issues.apache.org/jira/browse/WW-5035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16864744#comment-16864744
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ASF GitHub Bot commented on WW-5035:
------------------------------------
JCgH4164838Gh792C124B5 commented on pull request #361: Proposed WW-5035
enhancement:
URL: https://github.com/apache/struts/pull/361
Proposed WW-5035 enhancement:
- Provide cache clearing methods for OgnlUtil (expression cache, BeanInfo
cache).
- Provide methods to check the cache sizes (entry number for expression
cache, BeanInfo cache).
- Provide static method to clear the OgnlRuntime cache (convenience
method).
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> 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
>
>
> 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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