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Paper detail

A1: A Distributed In-Memory Graph Database

A1 is an in-memory distributed database used by the Bing search engine to support complex queries over structured data. The key enablers for A1 are availability of cheap DRAM and high speed RDMA (Remote Direct Memory Access) networking in commodity hardware. A1 uses FaRM as its underlying storage layer and builds the graph abstraction and query engine on top. The combination of in-memory storage and RDMA access requires rethinking how data is allocated, organized and queried in a large distributed system. A single A1 cluster can store tens of billions of vertices and edges and support a throughput of 350+ million of vertex reads per second with end to end query latency in single digit milliseconds. In this paper we describe the A1 data model, RDMA optimized data structures and query execution.

preprint2020arXivOpen access
Chiranjeeb BuragohainKnut Magne RisvikPaul BrettMiguel CastroWonhee ChoJoshua CowhigNikolas GloyKarthik KalyanaramanRichendra KhannaJohn PaoMatthew RenzelmannAlex ShamisTimothy TanShuheng Zheng
DatabasesDistributed, Parallel, and Cluster Computing
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Chiranjeeb BuragohainKnut Magne RisvikPaul BrettMiguel CastroWonhee ChoJoshua CowhigNikolas GloyKarthik KalyanaramanRichendra KhannaJohn PaoMatthew RenzelmannAlex ShamisTimothy TanShuheng Zheng

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