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I am looking for a good Java Graph Library which is thread safe for concurrent access. JGraphT, JUNG, JTS are very good but again for concurrent access I will have to synchronize it externally which is becoming a pain. It is a pain because say If thread A have to access 50 vertices, Thread B for another 50 with the intersection of vertices being 20 vertices. Now while writing code I need to know this 20 before so that I can synchronize it accordingly. Pl suggest if there exists some framework for graphs which has inbuilt support for concurrency

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Waiting for some answers –  Jatin Oct 22 '11 at 6:02

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Neo4J.org sits in this space IIRC.

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But isnt it a db for graphs. Can you please express it a little. –  Jatin Oct 21 '11 at 16:14

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