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I don't know where you got the impression from that Neo4j can't handle graphs of this size. We have users and customers running much larger graphs in production. So that _definitive fact_ is not true :)

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On a another note, I do recall a bit about where I had the capacity impressions from: http://neo4j.com/docs/stable/capabilities-capacity.html

That ~5B edges is roughly where we're currently at, however that is growing and the limit of 34B is under 10x of where we're currently at.

I'm willing to believe that Neo4j could handle it (admittedly this research is 18 months old), but everything I see about the Neo4J licensing model indicates we could not link to it without also opensourcing our code, which is a no go for us.

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