Thoughts, tech notes, in-depth articles and walkthroughs.

June 16, 2020 2 mins read

A Deep Dive into DevSecOps: My Conversation on the Security-Insider Podcast

In a recent episode of the Security-Insider Podcast, I, Fabian Keller, delve into the transformative impact of DevSecOps on IT system security and discuss the balance between safety and security. Listen to the full episode for insights on the benefits of rapid iteration cycles, the importance of a security-oriented mindset, and the role of threat modeling in proactive security planning.

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May 31, 2020 9 mins read

5 Useful jq Commands to Parse JSON on the CLI

JSON has become the de facto standard data representation for the web. It’s lightweight, human-readable (in theory) and supported by all major languages and platforms. However, working on the CLI with JSON is still hard using traditional CLI tooling. Lucky, there is jq, a command-line JSON processor. jq offers a broad range of operations to transform and manipulate JSON based data structures from the command line. Looking at the documentation however reveals an overwhelmingly huge number of options, functions and things you can do with jq.

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February 25, 2020 3 mins read

Hello Photography

Mid 2019 I have started contributing photos that I took to Unsplash. Unsplash is my main goto resource to spice up presentations, documents and talks. I even use it as a resource to put sample photos into the applications I build (when not using or placekitten). Over the years, I have used hundreds of photos that individual photographers all over the world have made, edited and contributed to the ever-growing Unsplash library.

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January 17, 2020 6 mins read

The Art of Writing Scripts for CI/CD

Writing scripts for continous integration/delivery (CI/CD) pipelines is often done as quick as possible in order to get the pipeline green (i.e. working as expected). Often though, the good engineering practices we put into our applications are neglected for the CI/CD pipelines. When projects and code bases evolve over time this can easily become an error-prone maintenance nightmare that no one dares to touch. This blog post will show some ideas you can use to significantly improve the maintainability and robustness of any CI/CD pipeline setup.

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