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Welcome! I'm Erik Dörnenburg, a software developer and consultant. I work at ThoughtWorks where I help our clients write and deliver custom software.

Somehow I also find time to speak at conferences and to maintain a couple of open source projects.  more

News and Events

Dec 2017: The new ThoughtWorks Technology Radar is out and I'll present it with my colleages, Birgitta, Christoph, and Lisa in Hamburg, Munich, and Berlin. more

27 Nov 2017: At HEALTH:CODE my collegue Lukasz and I will present a version of my DevOps talk with a focus on the Medical Industry. more

Latest blog posts

The Swift effect

17 Jan 2018

In June 2014, at its annual developer conference, Apple announced that they had created a new programming language, named Swift, to replace the ageing Objective-C as the preferred language for writing applications for Apple devices.

I remember this well because also in 2014 I had decided to revamp the API for OCMock, a testing framework for Objective-C that I have been maintaining for a long time. Most of the work on the framework was done in April/May, and the Swift announcement came just days before the release of the new version of OCMock.

Immediately, I wondered what impact of Apple’s announcement would have on Objective-C and, in turn, on OCMock. Given Apple’s messaging around this, it was clear that most developers would eventually move to Swift. But how many? And how quickly?

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Using multiple Github accounts

21 Dec 2017

Two Octocats

Mixing work and private life always brings its problems. That is also true for open source software, and for being a member of the communities on Github. In my case, I have a number of repositories on Github that I would classify as personal; they are not linked to my work at ThoughtWorks. Some of these are significant projects in their own right.

At the same time, an increasing number of clients I work with at ThoughtWorks keep their source code on Github. And to be specific: they use github.com itself, not the on-premise Github Enterprise version. It never felt right to use my regular Github account in such cases, and I experienced real issues because of it. For example, one client regularly ran Gitrob, my membership in their repositories was a link to my non-work repositories, which Gitrob also scanned. Due to the way it works Gitrob has a tendency to report false positives, needlessly causing concern and extra work for the client team.

So, to avoid such issues I created another Github account purely for work. Easy as that? Turns out there is a significant problem; a problem that now has simple solution, but one that is difficult to find.

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