[jira] Work started: (WW-3577) JspFactory.getDefaultFactory() is synchronized, We can cache the return value to improve performance

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

     [ https://issues.apache.org/jira/browse/WW-3577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on WW-3577 started by Lukasz Lenart.

> JspFactory.getDefaultFactory() is synchronized, We can cache the return value to improve performance
> ----------------------------------------------------------------------------------------------------
>
>                 Key: WW-3577
>                 URL: https://issues.apache.org/jira/browse/WW-3577
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Dispatch Filter
>    Affects Versions: 2.2.1.1
>            Reporter: Xiaoming Shi
>            Assignee: Lukasz Lenart
>             Fix For: 2.2.2
>
>
> JspFactory.getDefaultFactory() is synchronized, we can cache the return value to improve performance.
> In the function doExecute(), 
> ./src/core/src/main/java/org/apache/struts2/dispatcher/VelocityResult.java                  line: 122, 137
> The value returned by JspFactory.getDefaultFactory()  can be cached to reduce race and improve performance
> (Similar to the Apache Bug, https://issues.apache.org/bugzilla/show_bug.cgi?id=44408)

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