RethinkDB raises the bar: it has a modern query language (i.e., it's very intuitive) and it scales well in enterprise (i.e., massively parallel distributed infrastructure). Also, RethinkDB is a must for realtime apps. A Review collected by and hosted on G2.com.
Adoption isn't very widespread in industry, as in many developers I know tend to play it safe with MySQL. There are simply too many restrictions with which operations can be performed atomically that it can't be adopted for tier one services such as user/org, login, sessions, etc. Review collected by and hosted on G2.com.
