  This paper introduces the recent work of Nebula Graph, an open-source,
distributed, scalable, and native graph database. We present a system design
trade-off and a comprehensive overview of Nebula Graph internals, including
graph data models, partitioning strategies, secondary indexes, optimizer rules,
storage-side transactions, graph query languages, observability, graph
processing frameworks, and visualization tool-kits. In addition, three sets of
large-scale graph b
