List/Grid Tag Archives: Akka

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Building a REST service in Scala with Akka HTTP, Akka Streams and reactive mongo

At the end of last year I wrote a couple of articles that showed how you can use Spray.io to create a Scala based REST service () and how to create a websocket server with Scala, Akka ...
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A reactive and performant Spray + Akka solution to “Playing with concurrency and performance in Java and Node.js”

In my previous post I examined a fictitious trading engine and compared a Java based blocking solution to a Node.js based non-blocking solution. At the end of the post I wrote that: I ...
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ReactiveMongo with Akka, Scala and websockets

I was looking for a simple websocket server for one of my projects to test some stuff with reactive mongo. When looking around, though, I couldn’t really find a simple basic implementation ...
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Use reactive streams API to combine akka-streams with rxJava

Just a quick article this time, since I’m still experimenting with this stuff. There is a lot of talk around reactive programming. In Java 8 we’ve got the Stream API, we ...
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Akka Notes – Actor Supervision – 8

Failures are more like a feature among distributed systems. And with Akka’s let it crash fault tolerance model, you could achieve a clear separation between your business logic ...
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Clustering reactmq with akka-cluster

In the last two posts on reactmq, I described how to write a reactive, persistent message queue. The queue has the following characteristics:                  there ...
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Akka Notes – DeathWatch – 7

When we talked about Actor lifecycle, we saw that Actors could be stopped by various means (using ActorSystem.stop or ActorContext.stop or sending a PoisonPill – there’s ...
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From Java 7 Futures to Akka actors with Scala

This blog post will show you how a step by step transition from a “java 7 and j.u.c.Future” based implementation to an “akka actor written in scala solution” looks like. It ...
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Akka Notes – Child Actors and ActorPath – 6

Actors are completely hierarchical. Whatever Actors that you create HAS to be a child of some other Actor. Let’s analyze that a bit : Path Say, we create an ActorRef using ActorSystem.actorOf ...
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Akka Notes – ActorSystem (Configuration and Scheduling) – 4

As we saw from our previous posts, we could create an Actor using the actorOf method of the ActorSystem. There’s actually much more you could do with ActorSystem. We’ll ...
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