okram

We are going to address alot of these questions in our presentation tonight. However, for the Hacker News crew that won't be there tonight, here is an early release of the Titan talk.

https://speakerdeck.com/u/okram/p/titan-the-rise-of-big-grap...

http://titanbiggraphdata.eventbrite.com/

Enjoy!, Marko.

Also, Aurelius will be posting a blog post in ~2 weeks where we will be simulating Twitter. We replay Twitter from day 1 to June 2009 and slam it with ~10,000 concurrent users writing/reading follows relationships, tweets, stream constructions -- ultimately growing (what we think will be) a 3 billion edge graph when the simulation is complete.

Titan currently does not have "edge indexing" and thus can not implement Blueprints' GraphSail interface [https://github.com/tinkerpop/blueprints/wiki/Sail-Ouplementa...]. If it did implement GraphSail, then SPARQL would be supported via the Sail SPARQL engine.

Titan exposes graph data over a machine cluster. It is an OLTP system that allows you to do local neighborhood graph traversals in sub-second time. For OLAP processing (e.g. global graph algorithms), Aurelius will be releasing two projects named Faunus and Fulgora in the coming months. These provide Hadoop connectivity and compressed in-memory representations of "graph slices." We will be publishing our talk slides tonight that discuss this eco-system of graph technologies. See http://titanbiggraphdata.eventbrite.com/