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Posted to oak-issues@jackrabbit.apache.org by "angela (JIRA)" <ji...@apache.org> on 2015/03/31 16:54:53 UTC

[jira] [Updated] (OAK-2707) Performance: Consider cache for SessionImpl#getNamespacePrefixes

     [ https://issues.apache.org/jira/browse/OAK-2707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

angela updated OAK-2707:
------------------------
    Summary: Performance: Consider cache for SessionImpl#getNamespacePrefixes  (was: Performance: SessionImpl#getNamespacePrefixes should be cached)

> Performance: Consider cache for SessionImpl#getNamespacePrefixes
> ----------------------------------------------------------------
>
>                 Key: OAK-2707
>                 URL: https://issues.apache.org/jira/browse/OAK-2707
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: oak-jcr
>    Affects Versions: 1.1.7
>            Reporter: Joel Richard
>            Priority: Critical
>              Labels: performance
>             Fix For: 1.2
>
>         Attachments: Screen Shot 2015-03-30 at 08.38.58.png
>
>
> Sesison#getNamespacePrefixes is heavily used in Sling (see org.apache.sling.jcr.resource.JcrPropertyMap#escapeKeyName) and can easily be called 5000-8000 times per page load.
> Therefore, it adds 10-15% page rendering overhead for Sling-based websites (see attachment). Would it be possible to add either a global cache or at least a session cache for this method?



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