Home » Author Archives: Nepomuk Seiler

Author Archives: Nepomuk Seiler

Nepomuk Seiler is a information sience student at the Ludwigs-Maximilians-University Munich. He uses Scala for machine learning tasks and web development with play. Also he provided some small contributions to the Eclipse community.

SBT AutoPlugins Tutorial

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This tutorial will guide you through the process of writing your own sbt plugin. There are several reasons to do this and it’s really simple:                   Add customized build steps to your continuous integration process Provide default settings for different environments for various projects Before you start, make sure to have sbt ...

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From Java 7 Futures to Akka actors with Scala

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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 will take four steps, which are:                 Java 7 and futures Java 8 and parallel streams Scala and futures Scala and actors ...

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Monitoring Akka with Kamon

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I like the JVM a lot because there are a lot of tools available for inspecting a running JVM instance at runtime. The Java Mission Control (jmc) is one of my favorite tools, when it comes to monitor threads, hot methods and memory allocation. However these tools are of limited use, when monitoring an event-driven, message-based system like Akka. A ...

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Akka Cluster with Docker containers

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This article will show you how to build docker images that contain a single akka cluster application. You will be able to run multiple seed nodes and multiple cluster nodes. The code can be found on Github and will be available as a Typesafe Activator. If you don’t know docker or akka Docker is the new shiny star in the devops world. ...

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Open Source Projects – Between accepting and rejecting pull request

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Lately I have done a lot of work for the sbt-native-packager project. Being a commiter comes with a lot of responsibilities. You are responsible for the code quality, supporting your community, encouraging people to contribute to your project and of course providing an awesome open source product. Most of the open source commiters will probably start out as a contributor ...

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Future Composition with Scala and Akka

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Scala is functional and object-oriented language, which runs on the JVM. For concurrent and/or parallel programming it is a suitable choice along with the Akka framework, which provides a rich toolset for all kind of concurrent tasks. In this post I want to show a little example how to schedule a logfile-search job on multiple files/servers with Futures and Actors. ...

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Maven Reports in Jenkins

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Code quality is a sensitive topic. It affects your maintenance cost as well as your customer satisfaction. Not to mention your developers motivation to work with the code. Who wants to fix ugly code, right? Discussing code quality always needs hard facts and numbers! So this is a short tutorial how to create some simple reports to analyze some code ...

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