CouchDB is cool if you want to mess with revisions: http://docs.couchdb.org/en/2.1.0/intro/api.html http://docs.couchdb.org/en/2.1.0/intro/api.html When you're

CouchDB is cool if you want to mess with revisions: http://docs.couchdb.org/en/2.1.0/intro/api.html http://docs.couchdb.org/en/2.1.0/intro/api.html When you're talking billions - trillions of events, check out something like https://www.slideshare.net/AmazonWebServices/how-netflix-uses-amazon-kinesis-streams-to-monitor-and-optimize-largescale-networks-in-realtime https://www.slideshare.net/AmazonWebServices/how-netflix-use...