Make Filter caching more efficient ---------------------------------- Key: HSEARCH-131 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-131 Project: Hibernate Search Issue Type: New Feature Components: engine Reporter: Emmanuel Bernard Priority: Minor Emmanuel, This is the contents of a message on the Lucene boards regarding cache and filter. I thought you moght be interested in it since you weren't completely happy with your bitset filtering. --------------------- Check out the HashDocSet from Solr, this is the best way to cache small sets of search results. In general, the Solr BitSet/DocSet classes are more efficient than using the standard java.util.BitSet. You can use these independent of the rest of Solr (though I recommend checking out Solr if you want to do complex caching). - Thom John Patterson wrote: > Hi, > > I am thinking about caching search results for common queries and just > want to check that for small numbers of results it would be better to > store the doc number as ints or shorts than to store a Filter with a > BitSet. I guess if you results contain less than 1/32 or 1/16 of the > number of documents then it would take less memory. > > Is there anything else to consider? > Hope this helps some. John G.