On: Why Google needed to build a graph serving system

[sandGorgon]

There is also Janusgraph which Google contributes to http://janusgraph.org

[ddorian43 → sandGorgon]

If you don't do datastructures right, then it will suck on performance.

Imagine doing a search-engine in a rdbms without special datastructures.

[sandGorgon → ddorian43]

janusgraph is usually used with Cassandra. This is the schema - https://docs.janusgraph.org/latest/schema.html

[ddorian43 → sandGorgon]

See mrjn replies. You need native graph db.