Tour of Akka Typed: Cluster Sharding

Update 21/11/2019: Fixed comment about shardId extraction in relation to ShardingEnvelope Welcome to the fifth part of the Akka Typed series! In this part, we’ll leave the safe harbor of a single …

Tour of Akka Typed: supervision and signals

Update 18.10.2019: fixed wrong syntax for handling multiple exceptions, clarifying a few points Welcome to the third part of the Akka Typed series. In the first part we had a look at …

Raspberry PI Akka Cluster LED strips

Ever since Eric Loots from Lightbend first showed me the Raspberry-PI based Akka Cluster with special LED stripes, I’ve wanted (at least) one of them. This is a 5 node cluster with …

Akka anti-patterns: too many actors

Update 07.08.2018: clarified optimal vs. suboptimal use cases of having many actors at runtime (it could have been misunderstood that Akka isn’t meant to build systems with many actors – it entirely …

Tour of Akka Cluster

Here’s an overview of the Tour of Akka Cluster article series: Tour of Akka Cluster – Akka Distributed Data Tour of Akka Cluster – Eventual consistency, persistent actors, message delivery semantics Tour …

Akka anti-patterns: Java serialization

Akka makes use of serialization when messages leave the JVM boundaries. This can happen in mainly two scenarios: sending messages over the network when using Akka Cluster (do not use Akka Remote …

Akka anti-patterns: stateless actors

Actors are object-orientation done right (as opposed to say, objects in Java): their state is not visible from the outside and they communicate via messages. There’s no way to break encapsulation because …