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« Links of the Day - 2010/07/06 | Main | Links of the Day - 2010/07/05 »
Monday
Jul052010

Need a graph database? Look no farther than Neo4j 

Robert Scoble and Emil Eifrem discuss Neo4j, graph databases and BBQ restaurants.

Couple of notes taken from the interview:

  • There are a lot of interesting integrations of social and geographic graphs that have yet to be explored.
  • Neo4j more general purpose and supports infinite depth. This is contrast to a specialized solution like Twitter's FlockDB which is geared towards Twitter's unique needs.
  • Graph databases excel whenever the value is in the connections.
  • How scalable is Neo4j?
    • It's really challenging to provide horizontally when dealing with a graph database.
    • Neo4j scales to 12 billion nodes and relationships.
    • Currently relies on replication of the entire graph across machines.
  • In Neo4j 2.0 they are implementing transparent partitioning. Transparent partitioning essentially attempts to place isolated clusters of a graph, on their own machine. It's a difficult problem to solve simply because two isolated clusters can become connected with just one link.
  • Neo4j uses AGPL license. Essentially if your service is open source, Neo4j is open source. If your service is going to be closed source you need to purchase a commercial license.

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