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From Michael McCandless <>
Subject Re: How to use lucene for high search performance ?
Date Thu, 24 Jul 2008 10:09:58 GMT

Try InstantiatedIndexWriter/Reader (under contrib/instantiated)?

It consumes more RAM than the RAMDirectory approach, but is faster  


PS -- this sort of question should go to java-user in the future.

王建新 wrote:

> Hi,
>    If I use lucene to execute many search requests at one time, the  
> io operation will be the bottleneck of the performance.
>    So I use RAMDirectory to avoid io operation.
>    But I found RAMDirectory cannot raise the performance much if the  
> index is big( about 1.2G).
>    Could anyone give me any advice to raise the performance for  
> concurrent search operation?
>    Thanks.
> roy

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