Yes, pull out language:ENG language:FRA language:RUS into filters, cache them, and re-use them across all queries.
In Lucene, see CachingWrapperFilter() In Solr, use a separate fq (for filter query) parameter... q=+topic:m&a +topic:earn +company:MSFT&fq=language:ENG -Yonik On Fri, Jul 25, 2008 at 7:36 AM, Robert Stewart <[EMAIL PROTECTED]> wrote: > If I have a frequently queried field, which has a single value per document > (such as language), how can I pre-cache all field values, such that the > underlying query processing always uses memory cache (never disk i/o) for > that particular field? I don't know if it is possible without some custom > query processing, which may be difficult in my case. > > We have incoming ad-hoc Boolean queries, for instance: > > +topic:m&a +topic:earn +company:MSFT +language:(ENG FRA RUS) > > > We have translated contents per-language, so frequently, the language clause > may contain up to 30 language field values. The performance differences > between: > > +topic:m&a +topic:earn +company:MSFT +language:(ENG FRA RUS) > > And > > +topic:m&a +topic:earn +company:MSFT > > Is very significant (mostly since language is OR clause). > > So is there some way to optimize query processing on a per-field basis, such > that language clauses are processed more efficiently? > > Thanks > Bob > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
