Roché Compaan wrote: > On Fri, 2009-11-13 at 13:33 -0700, Shane Hathaway wrote: >> Stephan Richter wrote: >>> http://svn.zope.org/z3c.sharding/trunk > > Great stuff! This approaches scaling a large data set at application > level though. Don't you think a ZODB storage doing this for you would > solve the problem more generally?
I think proper construction of horizontally scalable databases must be done partly at application level, since a lot of the issues to be solved are specific to the application. > I think that the master index needs to be partitioned as well. In > benchmarks I performed early last year (http://bit.ly/pSVmd), a BTree > could only handle about 250 inserts / second when it approached 10 > million objects, so I'm guessing it will be almost unusable at a 100 > million. Right. The top level probably ought to be a dynamic hash, not a BTree. I intended z3c.sharding more as a proof of concept. Shane _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev