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Posted to oak-issues@jackrabbit.apache.org by "angela (JIRA)" <ji...@apache.org> on 2012/11/21 12:52:02 UTC

[jira] [Updated] (OAK-201) NamespaceRegistry is very slow

     [ https://issues.apache.org/jira/browse/OAK-201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

angela updated OAK-201:
-----------------------

    Component/s: jcr
                 core
    
> NamespaceRegistry is very slow
> ------------------------------
>
>                 Key: OAK-201
>                 URL: https://issues.apache.org/jira/browse/OAK-201
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core, jcr
>            Reporter: Thomas Mueller
>         Attachments: OAK-201.patch, SessionImpl.patch
>
>
> The NamespaceRegistryImpl.getURI and getPrefix are called a lot, for example by NamePathMapperImpl.getOakName. 
> The method doesn't do any caching, which is a problem because it has to read it each time from the repository. Even if it would do caching, it wouldn't help because it the method WorkspaceImpl.getNamespaceRegistry creates a new NamespaceRegistryImpl each time it is called. To allow caching of known mappings, the instance needs to be cached as well.

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