I think this is a very domain specific question. If you data is naturally very disjoint, then there can be value in having separate databases, and benefit from increased total database size, easy clustering/partitioning, etc. But, as you say below, you cannot (or at least not easily) traverse the total dataset, only within each database. Then if you need the occasional inter-database traversal, you can create special proxy nodes in each database representing the inter-database connections, and at application traverser level write the code for skipping over to the next database when needed. Obviously this is all very domain- and app-specific, and will not perform like in-database traversing (obviously :-)
I believe the Neo4j guys are investigating generalized partitioning schemes for clustering transparently, but I suspect that will take some time to mature. On Sun, Apr 11, 2010 at 2:50 PM, <rick.bullo...@burningskysoftware.com>wrote: > The fact that you'd lose all capability for sharing any common > relationships, tagging, and other benefits, plus the extra resource > demands, would seem to suggest it doesn't make any sense to use Neo4J in > a "database per user" manner. Would you do that with any other type of > data store? Almost certainly not, so I wouldn't do it with Neo. > > > -------- Original Message -------- > Subject: [Neo] a lot of small embedded databases or one big? > From: TuX RaceR <tuxrace...@gmail.com> > Date: Sun, April 11, 2010 7:00 am > To: Neo user discussions <user@lists.neo4j.org> > > Hello Neo4j Users! > > I'd like to store tree data attached to users of a web application. > As each user tree depends only on the user, I have the choice of store > the user data on a user file. > (This is some kind of easy sharding) > Is there some kind of problem in creating many small database files? > > Thanks > TuX > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
