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https://issues.apache.org/jira/browse/TILES-521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12998898#comment-12998898
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Xiaoming Shi commented on TILES-521:
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Hi Antonio,
Since JspExpressionFactoryFactory itself is a Factory, the best method may be
caching the value of JspExpressionFactory where it is used. But it may affect
many codes.
The other method is to add a field in the class JspExpressionFactoryFactory
which can be used to store the return value of JspFactory.getDefaultFactory().
If a JspExpressionFactory object is only used for once, then this method may
not improve any performance.
> JspFactory.getDefaultFactory() is synchronized, We can cache the return value
> to improve performance
> ----------------------------------------------------------------------------------------------------
>
> Key: TILES-521
> URL: https://issues.apache.org/jira/browse/TILES-521
> Project: Tiles
> Issue Type: Bug
> Components: tiles-el
> Affects Versions: 2.2.2
> Reporter: Xiaoming Shi
>
> In the file
> tiles-2.2.2/src/tiles-el/src/main/java/org/apache/tiles/el/JspExpressionFactoryFactory.java
> line:61
> 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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