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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (JCR-688) Improve name resolution
Date Wed, 27 Dec 2006 16:23:21 GMT
     [ http://issues.apache.org/jira/browse/JCR-688?page=all ]

Jukka Zitting updated JCR-688:
------------------------------

    Attachment: JCR-688.LocalCache.patch

Attached JCR-688.LocalCache.patch (against jackrabbit-core) that replaces the CachingNamespaceResolver
in NamespaceRepository with a simple LRUMap in LocalNamespaceMappings.

This achieves the same performance as before without any of the concurrence issues. It also
works fine with local namespace remappings.

> Improve name resolution
> -----------------------
>
>                 Key: JCR-688
>                 URL: http://issues.apache.org/jira/browse/JCR-688
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: core
>            Reporter: Jukka Zitting
>            Priority: Minor
>             Fix For: 1.3
>
>         Attachments: JCR-688.LocalCache.patch
>
>
> As discussed in JCR-685, the current CachingNamespaceResolver class contains excessive
synchronization causing monitor contention that reduces performance.
> In JCR-685 there's a proposed patch that replaces synchronization with a read-write lock
that would allow concurrent read access to the name cache.

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