eventstore

For anyone interested in event sourcing with the actor model I've built an open source Elixir library called Commanded (https://github.com/commanded/commanded) which takes advantage of Erlang's BEAM VM to host aggregate processes. There's also an event store implemented in Elixir which uses Postgres for storage (https://github.com/commanded/eventstore). The actor model provides the guarantee that requests to a single instance are processed serially, while requests to different instances can be processed concurrently. Distributed Erlang allows these instances to be scaled out amongst a cluster of nodes with transparent routing of commands to the instance, regardless of which connected node it is running on. In Elixir and Erlang, the OTP platform provides the building blocks to host an aggregate instance as a process (as a `GenServer`). Fo

Very interesting. This uses "Postgres server functions that can be used with any programming language or through the psql command line tool. Interaction with the underlying store through the Postgres server functions ensures correct writing and reading messages, streams, and categories." (https://github.com/message-db/message-db#api-overview) In Elixir-land, there is https://github.com/commanded/eventstore (which AFAICT is closely tied to the Commanded CQRS/RS framework https://github.com/commanded/commanded)