active_domain (rubygems):     A framework that allows to write a domain server, that processes commands and creates events.      You should have exactly one domain server for your Rails Disco applications.     The domain runs in a domain specific database environment. This helps to make sure no other process interferes with the domain.      Have a look at the rails-disco documentation on Github for more details. 
Keywords: distributed-systems|event-driven|event-sourcing|framework|ruby