DataStorage Only Usage

some of our user use s2graph as key-value storage.

they use s2graph because of s2graph do not degrade performance comparing to native hbase client, but provide useful features.

of course value should be dynamically changing list when graph model is more intuitive than simple string value.

followings features have been useful for our clients.

1. multiple indices on label.
2. easy of online-migration thanks to idempotency with strong consistencyLevel label.
3. no need to create reverse direction edge. s2graph automatically create reverse direction edge.