Filter or Query

[Ganesh <em...@yahoo.co.in>]

Hello all,

I am planning to use Filter for UserID and Date. I will not be able to cache 
the Filter. I have to create this filter for every request. To my knowledge, 
Filter will give faster results, only if it is cached.

Is it a good idea to use a filter or better to use query?

Regards
Ganesh

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Re: Filter or Query

[Erik Hatcher <er...@ehatchersolutions.com>]

On Nov 20, 2008, at 11:58 PM, Ganesh wrote:

> I am planning to use Filter for UserID and Date. I will not be able  
> to cache the Filter. I have to create this filter for every request.  
> To my knowledge, Filter will give faster results, only if it is  
> cached.
>
> Is it a good idea to use a filter or better to use query?

If you use filter queries (fq) in this manner, you will be caching the  
results, and this could have a negative impact on faceting performance  
if you bump facet field/query entries out of the cache.

Having uncached filter queries would be a good idea: <https://issues.apache.org/jira/browse/SOLR-407 
 >

But for now, you could simply append your "filter" to the original  
query string (unless you're using dismax and need a sophisticated  
clause).

	Erik


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