My deep love for databases finds a new track with ArangoDB, which is a multi model database – can store key values, graph data and also JSON documents like Mongo. Very interesting approach, clubbing all your DBs together. In a real production environment, you might be able to get away with Arango replacing Mongo and Redis.
There were less than a dozen people at the meetup, which is good because I get a lot of time to bombard the speaker with questions. The presentation was very good, going into a lot of detail. I am yet to play with Arango, but it looks very interesting.