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From "Thomas Andraschko (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Commented] (MYFACES-4225) [perf] Cache whether a library exists in ExternalContextResourceLoader
Date Fri, 13 Apr 2018 16:27:00 GMT

    [ https://issues.apache.org/jira/browse/MYFACES-4225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16437522#comment-16437522
] 

Thomas Andraschko commented on MYFACES-4225:
--------------------------------------------

I would do it in: {{ExternalContextResourceLoader}}
[~lu4242] And hint how we should do it?

> [perf] Cache whether a library exists in ExternalContextResourceLoader
> ----------------------------------------------------------------------
>
>                 Key: MYFACES-4225
>                 URL: https://issues.apache.org/jira/browse/MYFACES-4225
>             Project: MyFaces Core
>          Issue Type: Improvement
>    Affects Versions: 2.2.11
>            Reporter: Christian Beikov
>            Priority: Major
>
> I'm seeing many {{sun.nio.fs.UnixException}} being thrown in the underlying code because {{ExternalContextResourceLoader.libraryExists}}
calls {{ExternalContext.getResource}} which in the end checks if a file exists on the FS.
I'd suggest when the project stage is PRODUCTION, this should be cached. Maybe this could
be done by installing an {{ExternalContextWrapper}} that caches all resource lookups? I just
see that parsing a XHTML causes many exceptions to be thrown internally which negatively affects
performance.



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