2011/3/30 Craig Taverner <cr...@amanzi.com> > Agreed, Rick. My opinion is the main reason to role your own index is to > make use of domain specific optimizations not available with generic > indices. In my case the main win is the combination of statistics result > and > index that is possible. > > But I have to confess, the real reason I started using graphs as indexes > was > just that I thought the graph concept so cool, I did not want to pollute it > with something non-graphy. Foolish ideology, I know, and I grew out of that > more than a year ago, but it did influence many of my early neo4j decisions > :-) >
I know that feeling :) > > On Wed, Mar 30, 2011 at 1:49 PM, Rick Bullotta > <rick.bullo...@thingworx.com>wrote: > > > My experience with using large graph trees for indexes has been mixed, > > with performance issues under heavy read/write load, perhaps due to the > many > > potential locks required during insertions. We switched to the timeline > > index, fwiw. > > > > > > > > ----- Reply message ----- > > From: "Craig Taverner" <cr...@amanzi.com> > > Date: Wed, Mar 30, 2011 7:43 am > > Subject: [Neo4j] question > > To: "Neo4j user discussions" <user@lists.neo4j.org> > > > > > > > > > I think for that the TimelineIndex interface would have to be > extended > > to > > > be able to hold additional data so that you can do compound > > > queries< > > > > > > http://docs.neo4j.org/chunked/milestone/indexing-lucene-extras.html#indexing-lucene-compound > > > >to > > > it and get exactly the functionality you're asking for with only one > > > index. Another way is to just copy the LuceneTimeline code and roll > this > > > yourself, it's really small, mostly one-liners for each implemented > > method. > > > > > > > Alternatively just role your own graph-tree structure that provides the > > same > > capabilities. Then you can index any combination of properties together, > to > > suite your planned queries. This is obviously much more work than Mattias > > suggestion, and does require that you know more about your domain (ie. > less > > general). But it does allow you to inspect the index itself with graph > > traversals, gremlin or neoclipse, which is not possible with lucene. > > _______________________________________________ > > Neo4j mailing list > > User@lists.neo4j.org > > https://lists.neo4j.org/mailman/listinfo/user > > > _______________________________________________ > Neo4j mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [matt...@neotechnology.com] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
