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From "zhouyanming (JIRA)" <j...@apache.org>
Subject [jira] Created: (WW-3467) Improve performance for page rendering by refactoring freemarker cache
Date Thu, 15 Jul 2010 07:22:50 GMT
Improve performance for page rendering by refactoring freemarker cache
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                 Key: WW-3467
                 URL: https://issues.apache.org/jira/browse/WW-3467
             Project: Struts 2
          Issue Type: Improvement
    Affects Versions: 2.1.8.1, 2.1.8, 2.1.6, 2.1.5
            Reporter: zhouyanming
            Priority: Blocker
         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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