External video:
This series of videos introduces developers and architects working with Java (and Scala) to the inner workings of Akka Cluster. The dashboard in the sample project visualizes a running Akka Cluster that you can use to watch the behavior of nodes in the cluster in real time.
Watch the video series at: https://www.lightbend.com/blog/akka-cluster-quickstart-dashboard-part-1-getting-started