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Explaining how clustering works in general, and Akka Cluster specifically, is well worth the effort. Ask anyone who “gets it”. As someone who has taught Akka Cluster courses many times over, I was always left unsatisfied after explaining the key concepts behind it in front of a white board. What I will explain and demonstrate live using a 5-node Raspberry-Pi based Akka Cluster, is how a powerful visualisation of the state of the nodes in a cluster can transform this complicated topic into one that is easy to grasp for anyone. Not only that: my personal experience has shown that it can actually transform a rather passive observer into someone who starts asking questions that demonstrate the fact that they fully grasp it. The fact that we use a physical cluster to demo and explain Akka Cluster is instrumental for this. I will conclude the talk by giving an overview how the Raspberry-Pi cluster is built along with the tooling that is used to put the demos together.
Eric Loots
From Lightbend Inc.
Eric’s a Scala & Akka champion, a global course instructor for Lightbend. Eric began programming in various machine languages some odd 35 years ago, subsequently passing via C and Java to Scala and Akka. Eric’s glad with the coming of age of Reactive Systems and enjoys helping others learn to build them.
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Is there any minimum nodes required to form a akka cluster?
Very nice presentation. I was interested in clustering in general and didn't know about Akka before this but now I have a pretty good idea of it.
I will run a webinar on this topic with my colleague, Kiki Carter on November 29 @ 6:00 CET. The capturing of the LED colors will be way better this time. If you want to join the webinar, you can sign-up on the following page: https://bit.ly/2BdfWZz
Software used in the demonstration can be found here: https://github.com/lightbend/Pi-Akka-Cluster
I was looking for a visual demonstration of Akka cluster raspberry pie for ages. I am so glad that it's on YouTube. I've liked this post even before watching it.