Another open source project from Netflix: NetflixGraph:
NetflixGraph is a compact in-memory data structure used to represent
directed graph data. You can use NetflixGraph to vastly reduce the size of
your application’s memory footprint, potentially by an order of magnitude or
more. If your application is I/O bound, you may be able to remove that
bottleneck by holding your entire dataset in RAM. You’ll likely be very
surprised by how little memory is actually required to represent your data.
At first glance it sounds sort of a Redis for graph data. Available on GitHub.
Original title and link: NetflixGraph: In-Memory Directed Graph Data ( ©myNoSQL)