[jira] Resolved: (WW-3467) Improve performance for page rendering by refactoring freemarker cache

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

     [ https://issues.apache.org/jira/browse/WW-3467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart resolved WW-3467.
-------------------------------

         Assignee: Lukasz Lenart
    Fix Version/s: 2.2.1
       Resolution: Fixed

Patch committed, thanks!

> Improve performance for page rendering by refactoring freemarker cache
> ----------------------------------------------------------------------
>
>                 Key: WW-3467
>                 URL: https://issues.apache.org/jira/browse/WW-3467
>             Project: Struts 2
>          Issue Type: Improvement
>    Affects Versions: 2.1.5, 2.1.6, 2.1.8, 2.1.8.1
>            Reporter: zhouyanming
>            Assignee: Lukasz Lenart
>            Priority: Blocker
>             Fix For: 2.2.1
>
>         Attachments: patch.txt
>
>
> currently,struts2 have two inconsistent options about freemarker cache
> 1.<constant name="struts.freemarker.mru.max.strong.size" value="250" />
> this option will used by freemarker.cache.MruCacheStorage
> 2.<constant name="struts.freemarker.templatesCache" value="true" />
> this option will use a internal ConcurrentHashMap in FreemarkerTemplateEngine but not freemarker native cache
> my patch deprecated this option and clean those code
> also add a option to change default update cache interval (5 seconds)
> <constant name="struts.freemarker.templatesCache.updateDelay" value="1800" />
> BTW:set devMode to true will disable cache and update immediately
> using cache will boost great performance, reduce 400ms to 20ms render a xhtml theme form and some textfield in my test .
> I think https://issues.apache.org/jira/browse/WW-2808 could closed by adding a wiki page about how to use freemarker cache

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