arangodb = the multi-model NoSQL database
https://github.com/arangodb/arangodb
A distributed free and open-source database with a flexible data model for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.
基准测试还不错的
https://www.arangodb.com/2015/10/benchmark-postgresql-mongodb-arangodb/