Re[2]: Search performance under high load

[Yura Smolsky <in...@altervision.biz>]

Hello, mark.

mh> 2) My app uses long queries, some of which include
mh> very common terms. Using the "MoreLikeThis" query to
mh> drop common terms drastically improved performance. If
mh> your "killer queries" are long ones you could spot
mh> them and service them with a MoreLikeThis or simply
mh> limit the number of allowed terms in the query string.

Can you please explain what is "MoreLikeThis" query in the Lucene?

Yura Smolsky.



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Re: Search performance under high load

[David Spencer <da...@tropo.com>]

Yura Smolsky wrote:

> Hello, mark.
> 
> mh> 2) My app uses long queries, some of which include
> mh> very common terms. Using the "MoreLikeThis" query to
> mh> drop common terms drastically improved performance. If
> mh> your "killer queries" are long ones you could spot
> mh> them and service them with a MoreLikeThis or simply
> mh> limit the number of allowed terms in the query string.
> 
> Can you please explain what is "MoreLikeThis" query in the Lucene?

Not sure exactly how Mark is using it, but several of us worked on the 
MoreLikeThis query similarity generator:

http://svn.apache.org/repos/asf/lucene/java/trunk/contrib/similarity/

Various javadoc links etc here:

http://searchmorph.com/weblog/index.php?id=44

> 
> Yura Smolsky.
> 
> 
> 
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