[jira] [Commented] (WW-5035) Provide mechanism to clear OgnlUtil caches

["Lukasz Lenart (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WW-5035?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16921205#comment-16921205 ] 

Lukasz Lenart commented on WW-5035:
-----------------------------------

What about Struts 2.6, do you plan to cherry-pick this change as well?

> 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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