Software Design

Articles about Software Design by Sebastian Bergmann

The illustration shows a programmer in a dark office in front of a laptop. Like an investigator, he searches for clues on a pinboard full of photos, notes and red threads – an emotional introduction that picks up on the familiar feeling of bug hunting. The accompanying text explains how to design software so that debugging does not have to feel like criminal investigation work.

June 3, 2026

Debugging as a design goal

Why do some bugs feel like a short detective story, while others feel like a never-ending thriller? I show you which decisions make your software debuggable.

A simple wooden bridge crosses a flowing stream in a straight line, leading into a green forest. A symbol of the fact that the simplest solution is often the most effective.

May 27, 2026

Code I do not have does not cause any problems

Not every problem requires new code. And every line we do not write is a line that will not cause any problems.

A sign reading "Private Property No Entry" stands in front of a large modern house with a wooden deck and glass railings in the background.

April 21, 2021

Do not mock what you do not own

If you use abstractions you don't own, testing may be difficult.

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