Hello Forks. I want to introduce an open-source distributed graph database s2graph on HBase.
Here is the github repository and presentations that describe how s2graph store data as property graph model and production usecases. github: https://github.com/kakao/s2graph presentation: 1. hbasecon(2015-05): http://www.slideshare.net/HBaseCon/use-cases-session-5 2. apachecon(2015-09): http://schd.ws/hosted_files/apachebigdata2015/06/s2graph_apache_con.pdf It is inspired by "TAO: Facebook`s Distributed Data Store for Social Graph" but implementation is different and use HBase as storage. It is linear scalable regarding to both number of server and how many edges that bfs search traverse on. It is not complete graph database, but simple layer to transform data into property graph model and provide fully asynchronous breadth first search on graph. currently more than 20 services from my company kakao( http://www.kakaocorp.com/en/main) are powered by in production and our average response time stay under 100ms with 20k breadth first search query per second at peak on more than trillion edges for about 8 months. if you find it interesting, please leave me comment. Thanks, Doyung Yoon
