I there any repository on github for Apache Cassandra backend? 2017-03-26 21:55 GMT+03:00 A. Soroka <aj...@virginia.edu>:
> TDB is a native store, with a next generation version in development [1]. > SDB uses a SQL backend. It is not under active development. Claude Warren > (one of the Jena committers) has been working on an Apache Cassandra > backend, and he can say more about it if it seems relevant. > > --- > A. Soroka > The University of Virginia Library > > [1] https://github.com/afs/mantis > > > On Mar 26, 2017, at 12:54 PM, Dick Murray <dandh...@gmail.com> wrote: > > > > On 26 Mar 2017 5:20 pm, "Laura Morales" <laure...@mail.com> wrote: > > > > - Is Jena a "native" store? Or does it use some other RDBMS/NoSQL > backends? > > > > > > It has memory, TDB and SDB (I'm not sure of the current state) > > > > - Has anybody ever done tests/benchmarks to see how well Jena scales with > > large datasets (billions or trillions of n-quads)? > > > > > > We have several 650GB TDB and some Men instances at 128 GB. What queries > > are being performed? How many graphs do you have? Are you just querying > or > > updating as well? > > > > - Is it possible to start with a single machine, and later distribute the > > database over multiple machines as the graph grows? > > > > > > Not currently with TDB but i have code in production which aggregates > > across multiple DatasetGraph's. We create a DatasetGraphMosaic and add > > DatasetGraph's to it. TDB in other JVM's are supported via a Thrift based > > proxy. This allows simple sparql, otherwise use the service command in > your > > query... > >
