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I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Spring Calendar – Release Schedule for Spring Projects

Spring - and Spring Boot in particular - are my main go-to frameworks when it comes to implementing applications and automating processes for both my clients and myself. Additionally, I give courses on Spring Boot and various other Spring-related subjects and I also run "Stratospheric - From Zero to Production with Spring Boot and AWS" (ebook and companion online course). Hence, it's fair to say I'm quite committed to Spring and the Spring community, which is why knowing in advance when a ... Read more

Spring I/O 2023 – Keynote

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Lösung für die COVID-19 Pandemie: Schnelltests als Zugangsberechtigung

Sorry, this entry is only available in German.Contrary to my usual writing habits the remainder of this post will be in German. The reason for this is that although the subject most certainly is of interest to everyone the specifics of the solution outlined in the following mostly apply to the current COVID-19 situation in Germany and my personal experience with that situation. The article therefore is mostly relevant to a German audience. If you're interested in discussing the potential for ... Read more

Five Articles on Software Quality and Design Patterns

This week I'd like to point you to five articles I previously posted on this blog and from which I think that they're as relevant as they were at the time. The first three are about general software design principles, software architecture and software quality while the final two refer to specific best practices and common design patterns for Angular: Writing Disposable Code, Not Reusable Code (November 06, 2016) What Causes Over-engineering and How Can You Prevent It? (April 16, 2017) Less Is More ... Read more

Admiral Grace Hopper Explains the Nanosecond

Grace Hopper was a brilliant computer scientist, who - among numerous other achievements throughout her career in mathematics and computer science, the military, and the at the time nascent software business - can be credited with having had a pivotal role in the development of the business programming language COBOL (which quite deservedly got her the nickname Grandma COBOL and which in turn gave rise to enterprise software and the enterprise software industry) This is her visually explaining what a nanosecond ... Read more

Repost from 16 June 2020: COVID-19 Tracing App for Germany

Repost from 16 June 2020: German COVID-19 tracing app available now. Read more

German COVID-19 Tracing App Available Now

Earlier today, the highly anticipated COVID-19 tracing app for Germany, called Corona-Warn-App, has been released. The iOS version is available on the App Store. The Android version can be downloaded at Google Play. The Corona-Warn-App is based on the DP3T (Decentralized Privacy-Preserving Proximity Tracing) architecture and the joint specification by Apple and Google for privacy-preserving exposure notification, which implements this architecture as an API for official public health providers to draw upon. The app is developed and published as open source under the Apache ... Read more

Konrad Zuse: Not the most correct but the least complicated theories find practical application.

Not the most correct but the least complicated theories find practical application. - Konrad Zuse A translated quote from one of the inventors of computers and modern computer science I read last year under a bust of Zuse near Kleiner Tiergarten in Berlin this statement is more relevant today than ever. In software development in particular we often attempt to design solutions that cover each and every possible use case - however unlikely or even virtually non-existent that use case might be. ... Read more

Boring Solutions Revisited: Choose Boring Technology by Dan McKinley

Dan McKinley's article on choosing boring solutions, although not exactly new anymore, has been a welcome reminder for me to revisit the topic of of using boring solutions and keeping things simple. Dan makes the point that "adding technology to your company comes with a cost" or as I stated in my own article on this subject: "The elephant in the room is: There’s an opportunity cost to everything." Most choices come with a trade-off. If you decide to use a technology for the ... Read more

The 5 Levels of Logging Explained by Orhan Kavrakoğlu

In this article Orhan Kavrakoğlu explains the logging levels commonly used in software alongside with some pertinent examples as well as recommendations and best practices such as in which case to use which particular log level and how to present them to the target audience (i.e. other developers, system administrators or DevOps people) so they get noticed in accordance with their respective importance and urgency. As mentioned here before seemingly trivial improvements such as providing better context in your log messages can ... Read more
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