FlockDB and Graph Databases
Michael Marr:
The biggest difference between FlockDB and other graph databases like Neo4j and OrientDB is graph traversal. Twitter’s model has no need for traversing the social graph. Instead, Twitter is only concerned about the direct edges (relationships) on a given node (account).
Without traversals it is only a persisted graph. But not a graph database.
Original title and link: FlockDB and Graph Databases (NoSQL databases © myNoSQL)