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• 23.05.2013 – 

  The Open Source Datacenter Conference 2013

  As some of you might already know, synyx provides their employees with an annual budget that we can spend on anything that helps us improve our job skills, such as professional literature, training or seminars and conferences. So, a few weeks ago, when a coworker mentioned the upcoming Open Source Data Center Conference in Nuremberg, we decided to sign up for it and go on an exciting adventure to improve our knowledge of the newest system administration technologies.

  The Open...

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• 24.04.2013 – 

  Asynchronous concurrency with vert.x – Part 2

  CoffeeScript

  Vert.x supports JavaScript through the Rhino JavaScript engine. Although JavaScript is a decent language once you get to know it, I prefer CoffeeScript, a language that compiles to JavaScript. Luckily, vert.x has built-in support for CoffeeScript, so I can use it nearly transparently. You will only notice the JavaScript under the hood when reading stack traces, which will refer to the compiled JavaScript file.

  For the examples in this blog post, the only thing you need to...

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• 24.04.2013 – 

  Super Double Senior Expert Software Architect

  Aloha, liebe Freunde des Visitenkarten-Bullshit-Bingos. Ich brauche eure Hülfe! Mich treibt folgende Frage um: „Welche Titel soll synyx in Zukunft auf den Visitenkarten und in E-Mail-Signaturen verwenden?“

  Wir werden in absehbarer Zeit in ein anderes Büro umziehen. Sprich, eine neue Anschrift haben. Das wiederum bedeutet, dass wir unsere alten Visitenkarten entsorgen können und neue benötigen. Also, ein guter Zeitpunkt sich Gedanken über die jeweiligen Titel auf den Visitenkarten zu machen.

  Meiner Kenntnis nach hat ein Titel auf der...

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• 18.04.2013 – 

  Acceptance testing at synyx – Part 5

  The last few blogs about acceptance-testing focused on setting up a nice and scalable infrastructure to do testing through the (web)-GUI using a Selenium grid. Since we've got this running now we can go on to topics that focus how we write these tests. At synyx we try to write our web-tests as "acceptance-tests" so we first take a small dive into what that is.

  What is an Acceptance Test?

  In the first place an acceptance test cares about what...

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• 15.04.2013 – 

  Asynchronous concurrency with vert.x – Part 1

  Event-Driven Concurrency

  At synyx, we are looking at vert.x for an upcoming project where we are building a system that will need to scale under load. The tag-line of vert.x is effortless asynchronous application development for the modern web and enterprise, which fits the bill, so I decided to play around with it a little bit.

  The advantage of event-driven concurrency compared to traditional technologies is the reduced risk of deadlocks, livelocks and race conditions. Using mutexes and semaphores...

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