期待，mongodb4.0，也就是马上要来的3.8

https://www.mongodb.com/blog/post/multi-document-transactions-in-mongodb

MongoDB 4.0 will add support for multi-document transactions, making it the only database to combine the speed, flexibility, and power of the document model with ACID data integrity guarantees.

mongodb将成为一个高可用、可扩展、文档模式、支持事务的唯一数据库