RethinkDB 1.12: simplified map/reduce, ARM port, new caching infrastructure
I don't understand why databases like RethinkDB and MongoDB don't just provide a SQL interface.  I get it - they are marketing themselves as NoSQL but they are infact providing almost exactly the same set of features that say MySQL provided back in the day a simple "fast" sub-set of SQL.  Instead they use the lack of an interface as a marketing gimmick... when in reality we have to learn a new query language... :(