Hi Grant, Thanks for the explanation.
Regards ericz On Mon, Aug 30, 2010 at 3:22 PM, Grant Ingersoll <gsing...@apache.org>wrote: > > On Aug 30, 2010, at 7:20 AM, Eric Grobler wrote: > > > Hi Solr Community > > > > If you use a filter like: > > q=*:* > > fq=make:Volkswagen > > > > and then the next query is: > > q=blue > > fq=make:Volkswagen > > > > will Solr use the filter cache before the main query, or only after a > "blue" > > subset? > > The first query will put the FQ into the cache and then it will be re-used > on the second (and all subsequent) queries that use it. > > > In other words will this query make more sense? > > q=(blue) AND (make:Volkswagen) > > > > What are the do's and don'ts of Filter Queries and are there differences > > between Solr versions? > > You should use FQs when you expect to have cache hits and can also afford > the extra memory and won't get hit by garbage collection pauses when doing > commits, etc. > > > -------------------------- > Grant Ingersoll > http://lucenerevolution.org Apache Lucene/Solr Conference, Boston Oct 7-8 > >
