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From "Otis Gospodnetic (JIRA)" <>
Subject [jira] Commented: (LUCENE-1035) Optional Buffer Pool to Improve Search Performance
Date Sun, 17 Feb 2008 07:52:34 GMT


Otis Gospodnetic commented on LUCENE-1035:

It looks like this was never fully done.  I wonder if this should be closed, esp. since Ning
might be working on slightly different problems now.

> Optional Buffer Pool to Improve Search Performance
> --------------------------------------------------
>                 Key: LUCENE-1035
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Store
>            Reporter: Ning Li
>         Attachments: LUCENE-1035.patch
> Index in RAMDirectory provides better performance over that in FSDirectory.
> But many indexes cannot fit in memory or applications cannot afford to
> spend that much memory on index. On the other hand, because of locality,
> a reasonably sized buffer pool may provide good improvement over FSDirectory.
> This issue aims at providing such an optional buffer pool layer. In cases
> where it fits, i.e. a reasonable hit ratio can be achieved, it should provide
> a good improvement over FSDirectory.

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