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A day full of Clojure - organizing the first German ClojureBridge workshop

During the last years a lot of initiatives focusing on increasing diversity in IT and getting kids into IT have emerged. Last weekend the first German ClojureBridge workshop took place in Solingen. Another small but important step towards a diverse IT world.

Silvia Schreier

Blog Post

Per request debugging with Log4j 2 filters

Customers quite regularly call on me to support them when an application is not behaving as expected. On a development machine there are a lot of ways and utilities to analyse the situation. But troubleshooting the erroneous application behaviour in production environments quite often limits your tool belt to a minimum.

Alexander Heusingfeld

Blog Post

What’s in a Name: Reactive

Dr. Gernot Starke

Blog Post

Using Vector Assets on iOS

Vector graphics provide numerous advantages, especially when developing for mobile devices in a constantly expanding array of different screen sizes and pixel ratios. How to get them to work in an iOS app?

Robert Glaser

Blog Post

Functional Validation in Scala

Validation is something everybody needs eventually when working with domain models. The Scala ecosystems offers a wide rage of tools which can be used for this purpose. This blog post introduces some of the most common approaches by applying them to a domain model.

Tobias Neef

Blog Post

Why You Should Avoid a Canonical Data Model

Stefan Tilkov

Blog Post

Docker images for developers

Docker seems to be all the rage lately. There are docker talks at every conference, hosting Docker containers has become a hosting option with most if not all PaaS providers, and there is hardly a technology left that is not supposed to run better and more flexibly if you wrap it in a Docker container. Well, except maybe for enterprise-level DBMSs, but you can’t have them all. This post provides an example how Docker can be used at the start of the software lifecycle, during development.

Jerry Preissler

Blog Post

Scalable Software Systems

Scalability has long been one of the hallmarks of quality IT systems. When we hear this term we usually associate it with an upward scalability of the system. Generally, it seems to be about how much more throughput and load our system can sustain through additonal RAM, CPU or extra machines. Often, however, downwards scalability is just as interesting, that is, the behaviour of the system when only very few resources are available. Such flexibility is very useful, for instance, if a complex system has to go through a variety of differently sized development, test and acceptance environments before it is provisioned in the live system.

Oliver Tigges

Blog Post

Hystrix – to make your fuse blow just in time

Holger Kraus

Arne Landwehr