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From "Samba Siva Rao Kolusu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-619) CacheManager (Memory Management in Jackrabbit)
Date Sat, 03 May 2008 08:50:55 GMT

    [ https://issues.apache.org/jira/browse/JCR-619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12593980#action_12593980
] 

Samba Siva Rao Kolusu commented on JCR-619:
-------------------------------------------

Is there a way to use Apache Java Caching System or some other caching library like ehCache
or JBoss cache with Jackrabit?  If not, Can we expect this possibility in the near future
?

Rather an abstraction over the JCache(JSR-107)  allowing to plug in any cache manager that
implements the specification would be very good step  ahead.



> CacheManager (Memory Management in Jackrabbit)
> ----------------------------------------------
>
>                 Key: JCR-619
>                 URL: https://issues.apache.org/jira/browse/JCR-619
>             Project: Jackrabbit
>          Issue Type: New Feature
>          Components: jackrabbit-core
>            Reporter: Thomas Mueller
>            Assignee: Stefan Guggisberg
>             Fix For: 1.2.1
>
>         Attachments: cacheManager.txt, cacheManager2.txt, cacheManager5.txt, cacheManager6.txt,
cacheManager7.txt, jackrabbit-cachemanager-config.patch, stack.txt
>
>
> Jackrabbit can run out of memory because the the combined size of the various caches
is not managed. The biggest problem (for me) is the combined size of the o.a.j.core.state.MLRUItemStateCache
caches. Each session seems to create a few (?) of those caches, and each one is limited to
4 MB by default.
> I have implemented a dynamic (cache-) memory management service that distributes a fixed
amount of memory dynamically to all those caches.
> Here is the patch

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