1. Akka Persistence InmemoryAkka-persistence-inmemory is a plugin for akka-persistence that stores journal and snapshot messages memory, which is very useful when testing persistent actors, persistent FSM and akka cluster
3. Reactive ActivemqAn akka-streams implementation to consume and produce messages from ActiveMq queues and topics.
8. akka-concurrency-testStudy on what Threads, ThreadPools, Executors, ExecutorServices, ExecutionContext, Futures are and how to configure them