I like this architecture a lot but I don't know how "modern" it is. Event sourcing around a message bus is relatively common. In fact you don't even need that

I like this architecture a lot but I don't know how "modern" it is. Event sourcing around a message bus is relatively common. In fact you don't even need that many moving pieces. Akka persistence does most of this out of the box: http://doc.akka.io/docs/akka/current/scala/persistence.html http://doc.akka.io/docs/akka/current/scala/persistence.html Blue green deployments are a good addition here that many systems don't seem to be able to handle but the article doesn't really get into the details here.