[hibernate-issues] [Hibernate-JIRA] Resolved: (HSEARCH-131) Make Filter caching more efficient

[Emmanuel Bernard (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Bernard resolved HSEARCH-131.
--------------------------------------

       Resolution: Cannot Reproduce
    Fix Version/s:     (was: 3.1.0.Beta1)

This is for filter implementors, not for Hibernate Search specifically

> 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.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira