What is your exact requirement then? I ask, because these settings can solve the problems you've mentioned without the need to add any additional functionality.
On Tue, Jan 5, 2016 at 9:04 PM Matteo Grolla <matteo.gro...@gmail.com> wrote: > Hi Binoy, > I know these settings but the problem I'm trying to solve is when > these settings aren't enough. > > > 2016-01-05 16:30 GMT+01:00 Binoy Dalal <binoydala...@gmail.com>: > > > If I understand your problem correctly, then you don't want the most > > frequently used fqs removed and you do not want your filter cache to grow > > to very large sizes. > > Well there is already a solution for both of these. > > In the solrconfig.xml file, you can configure the <filterCache> parameter > > to suit your needs. > > a) Use the LeastFrequentlyUsed or LFU eviction policy. > > b) Set the size to whatever number of fqs you find suitable. > > You can do this like so: > > <filterCache class="solr.LFUCache" size="100" initialSize="10" > > autoWarmCount="10"/> > > You should play around with these parameters to find the best combination > > for your implementation. > > For more details take a look here: > > https://wiki.apache.org/solr/SolrCaching > > http://yonik.com/advanced-filter-caching-in-solr/ > > > > > > On Tue, Jan 5, 2016 at 7:28 PM Matteo Grolla <matteo.gro...@gmail.com> > > wrote: > > > > > Hi, > > > after looking at the presentation of cloudsearch from lucene > > revolution > > > 2014 > > > > > > > > > https://www.youtube.com/watch?v=RI1x0d-yO8A&list=PLU6n9Voqu_1FM8nmVwiWWDRtsEjlPqhgP&index=49 > > > min 17:08 > > > > > > I recognized I'd love to be able to remove the burden of disabling > filter > > > query caching from developers > > > > > > the problem: > > > Solr by default caches filter queries > > > a) When there are filter queries that are not reused and few that are > the > > > good ones get evicted unnecessarily > > > b) if the same query has multiple filter queries that are very > selective > > I > > > noticed a big performance disabling cache > > > c) I'd like to spare developers from deciding what has to be cached or > > not > > > > > > the question: > > > -Is there anything already working to solve those problems? > > > > > > what do you think about this? > > > -I was thinking to write a plugin to recognize query types with regular > > > exception and let solr admins associate a caching behaviour with each > > query > > > type > > > -another idea was to > > > -by default set fq caching off > > > -keep statistics about fq > > > -enable caching only for the N fq with highest hit ratio > > > > > -- > > Regards, > > Binoy Dalal > > > -- Regards, Binoy Dalal
