In memory indexes in clucene

[su...@zapak.co.in]

Hi,

I was looking into Lucene in-memory Indexes using RAMDirectory.
It has also provided with something "MMapDirectory"

I want the indexes to persist , so want go for FSDirectory. But to enhance
the searching capability , need to put the indexes onto
RAM. Now , problem is how can i synchronise both disk and ram based indices.

MMApDirectory in lucene seems to b faster than FSDirectory and no overhead
of getting disk and map synchronised. if this is provided in clucene?

Please suggest the alternatives to achieve performance in searching.


note: In present system ,I am creating lucene index in one server and
distributing the same( files .cfs ,segments, deletable..) to similar
directory structure to other slave  and using it for search.
So need a way by which i can copy the clucene indexed files , onto memory
once. and then perform searching using pointer to that structure in memory

So let me know how to go abt it.


Thanks in advance,
Suman







---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org

Re: In memory indexes in clucene

[Erick Erickson <er...@gmail.com>]

You'd probably get much more pertinent answers asking
on the CLucene, see:
http://sourceforge.net/apps/mediawiki/clucene/index.php?title=Support

<http://sourceforge.net/apps/mediawiki/clucene/index.php?title=Support>Erick

On Thu, Mar 4, 2010 at 3:42 AM, <su...@zapak.co.in> wrote:

>
> Hi,
>
> I was looking into Lucene in-memory Indexes using RAMDirectory.
> It has also provided with something "MMapDirectory"
>
> I want the indexes to persist , so want go for FSDirectory. But to enhance
> the searching capability , need to put the indexes onto
> RAM. Now , problem is how can i synchronise both disk and ram based
> indices.
>
> MMApDirectory in lucene seems to b faster than FSDirectory and no overhead
> of getting disk and map synchronised. if this is provided in clucene?
>
> Please suggest the alternatives to achieve performance in searching.
>
>
> note: In present system ,I am creating lucene index in one server and
> distributing the same( files .cfs ,segments, deletable..) to similar
> directory structure to other slave  and using it for search.
> So need a way by which i can copy the clucene indexed files , onto memory
> once. and then perform searching using pointer to that structure in memory
>
> So let me know how to go abt it.
>
>
> Thanks in advance,
> Suman
>
>
>
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>