Thanks Didier for your response And in your opinion, this should be as fast as if I would getCore(userId) -- provided that the core is already open -- and then search for "Paris" ? matt
--- On Wed, 1/27/10, didier deshommes <dfdes...@gmail.com> wrote: From: didier deshommes <dfdes...@gmail.com> Subject: Re: Multiple Cores Vs. Single Core for the following use case To: solr-user@lucene.apache.org Date: Wednesday, January 27, 2010, 10:52 AM On Wed, Jan 27, 2010 at 9:48 AM, Matthieu Labour <matthieu_lab...@yahoo.com> wrote: > What I am trying to understand is the search/filter algorithm. If I have 1 > core with all documents and I search for "Paris" for userId="123", is lucene > going to first search for all Paris documents and then apply a filter on the > userId ? If this is the case, then I am better off having a specific index > for the user="123" because this will be faster If you want to apply the filter to userid first, use filter queries (http://wiki.apache.org/solr/CommonQueryParameters#fq). This will filter by userid first then search for "Paris". didier > > > > > > --- On Wed, 1/27/10, Marc Sturlese <marc.sturl...@gmail.com> wrote: > > From: Marc Sturlese <marc.sturl...@gmail.com> > Subject: Re: Multiple Cores Vs. Single Core for the following use case > To: solr-user@lucene.apache.org > Date: Wednesday, January 27, 2010, 2:22 AM > > > In case you are going to use core per user take a look to this patch: > http://wiki.apache.org/solr/LotsOfCores > > Trey-13 wrote: >> >> Hi Matt, >> >> In most cases you are going to be better off going with the userid method >> unless you have a very small number of users and a very large number of >> docs/user. The userid method will likely be much easier to manage, as you >> won't have to spin up a new core every time you add a new user. I would >> start here and see if the performance is good enough for your requirements >> before you start worrying about it not being efficient. >> >> That being said, I really don't have any idea what your data looks like. >> How many users do you have? How many documents per user? Are any >> documents >> shared by multiple users? >> >> -Trey >> >> >> >> On Tue, Jan 26, 2010 at 7:27 PM, Matthieu Labour >> <matthieu_lab...@yahoo.com>wrote: >> >>> Hi >>> >>> >>> >>> Shall I set up Multiple Core or Single core for the following use case: >>> >>> >>> >>> I have X number of users. >>> >>> >>> >>> When I do a search, I always know for which user I am doing a search >>> >>> >>> >>> Shall I set up X cores, 1 for each user ? Or shall I set up 1 core and >>> add >>> a userId field to each document? >>> >>> >>> >>> If I choose the 1 core solution then I am concerned with performance. >>> Let's say I search for "NewYork" ... If lucene returns all "New York" >>> matches for all users and then filters based on the userId, then this >>> is going to be less efficient than if I have sharded per user and send >>> the request for "New York" to the user's core >>> >>> >>> >>> Thank you for your help >>> >>> >>> >>> matt >>> >>> >>> >>> >>> >>> >>> >> >> > > -- > View this message in context: > http://old.nabble.com/Multiple-Cores-Vs.-Single-Core-for-the-following-use-case-tp27332288p27335403.html > Sent from the Solr - User mailing list archive at Nabble.com. > > > > >
