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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (JCR-190) Caching in QueryHandler does not scale well
Date Mon, 22 Aug 2005 14:22:08 GMT
     [ http://issues.apache.org/jira/browse/JCR-190?page=all ]
     
Marcel Reutegger resolved JCR-190:
----------------------------------

    Resolution: Fixed

Caching is now less memory consuming.
- Caching the hierarchy relation between indexed nodes needs approximately 25 bytes per node.
- UUID to lucene document number mapping is cached with a LRU algorithm. The default cache
size is set to 1000 entries.

Implemented in svn revision: 234492

> Caching in QueryHandler does not scale well
> -------------------------------------------
>
>          Key: JCR-190
>          URL: http://issues.apache.org/jira/browse/JCR-190
>      Project: Jackrabbit
>         Type: Improvement
>   Components: query
>  Environment: svn revision: 233161
>     Reporter: Marcel Reutegger
>     Assignee: Marcel Reutegger
>      Fix For: 1.0

>
> Caching in class CachingIndexReader uses too much memory. It uses around 500 bytes per
node and does not use any strategy to limit the cache.
> This improvement covers two goals:
> - lower per-node memory cost for caching
> - implement a caching strategy using e.g LRU algorithm

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