Blog & Articles

Article

Next Please!

Despite modern multicore processors, website code usually runs in only one thread. True parallelism therefore does not exist, but a clever programming model still allows “asynchronous” code that is not processed linearly.

Blog Post

Managing Kubernetes Resources with Kustomize

Helm is the de-facto standard for managing groups of Kubernetes resources that belong to an application as a package. It comes with its own ecosystem to build, configure and distribute these packages. In some cases, this is an appropriate approach but sometimes we just want to manage our resources as yaml files and need a simple way to slightly modify the resources for different environments. In this article we will have a look at how Kustomize can help us with this.

Article

Fairness and Artificial Intelligence

Why Metrics Are Not Enough

Article

Processing JSON in Java

In contrast to many other programming languages, JDK for Java does not provide an out-of-the-box solution for the reading and writing of data in JavaScript Object Notation (JSON). So we have to find a suitable library for performing this task. In this article we therefore look at a selection of appropriate libraries.

Blog Post

CORS extension “Private Network Access”

Chrome rolled out the “Private Network Access” extension for its CORS handling. Let’s try to understand the why and how this is affecting us.

Article

Eine kleine Geschichte über Qualität…

…die entfernt auch mit Software zu tun hat

Article

Ethics and Artificial Intelligence

Artificial intelligence is forcing its way into many fields of application. Now it is important that it works in a responsible, secure, and transparent way. The regulation of AI systems is a legal, societal, and technical topic that demands broad awareness and that will become increasingly important in the years to come.

Article

Principles of technical documentation

This article collects fundamental requirements for technical documentation, especially software architecture documentation, together with ideas how to satisfy those.

Article

Libraries for command-line applications

Processing arguments and options in Java

Blog Post

Awesome presentations deserve beautiful code

Occasionally we need to put parts of our source code onto slides for presentations. The common presentation programs (such as PowerPoint or Keynote) fail miserably at this task because they interpret code as normal text. Syntax highlighting is lost, as are indentations. It looks lousy, and it’s no fun. This post introduces carbon.now.sh, a quick and free solution, created by the awesome people from @carbon_app.

Article

MLOps and Model Governance

MLOps and model governance are often viewed as separate processes. And yet they rely heavily on one another. In this article we therefore propose the integration of these frameworks and explain the most important principles and technical components of MLOps and ML model governance.

Blog Post

Cloud Security

Wie schaffe ich Sicherheit in einer Cloud-Umgebung?

Article

Iterierst du noch, oder streamst du schon?

Worin unterscheiden sich Streams und Iteratoren in Java? Man sollte denken, dass beide Ansätze dafür gedacht sind, Dinge wiederholt auszuführen, und dass Streams nur eine komfortablere Art und Weise sind, den Algorithmus auszudrücken. Die beiden APIs unterscheiden sich aber in mancher Hinsicht. Ziel dieses Artikels ist es, die beiden Ansätze zu vergleichen – zum einen mit Blick auf die Ergonomie eines Beispiels, zum anderen auf funktionale Unterschiede bei der Parallelisierung und Mutabilität.

Article

A Comparison of Java HTTP Clients

In addition to databases, communication via HTTP to other services is nowadays found in almost every project. A large number of libraries have been built within Java that can be used for this purpose. In this article we will take a closer look at four of these candidates and see in which aspects they differ from one another.

Blog Post

Authoring Markdown with Zotero - My Workflow

Combining simple writing with powerful references

Article

Die ökonomischen Vorteile von User Experience Design

Eine positive User Experience erreicht niemand auf Anhieb. Doch es lassen sich schon durch wenige einfache Maßnahmen enorme ökonomische Vorteile erzielen.

Article

Geld statt Kohle

Viele Kryptowährungen nutzen Blockchains mit „Proof of Work“, aus dem ein enormer Energieverbrauch resultieren kann. „Proof of Stake“ löst dieses Problem, doch das Verfahren hat auch Nachteile. Ganz ohne Proof of Irgendwas lässt sich eine Kryptowährung aber kaum realisieren.

Article

What Does a Bundler Actually Do?
Article

Benutzer­freundlicher Äther

Smart Contracts, wie sie die Ethereum-Blockchain kennt, sind technisch eine feine Sache. Aber sie brauchen eine Bedienoberfläche, wenn sie nicht nur Entwicklern nützen sollen – dann werden daraus „dezentrale Applikationen“. Um so eine DApp zu programmieren braucht man nur etwas HTML und JavaScript.

Blog Post

Setup für Hybrid-Workshops

In hybriden Workshops können Menschen online und vor Ort zusammenarbeiten, sowohl in Schulungen als auch bei anderen Arten von Meetings. In diesem Post zeigen wir euch, wie ihr solche hybriden Workshops oder Trainings durchführen könnt. Ihr erfahrt, wie ihr die wesentlichen (technischen) Herausforderungen meistert, was ihr an Equipment benötigt, und wie ihr das einrichtet. Dazu gibt’s eine Menge lessons learned über kombinierte online- und vor-Ort Veranstaltungen.

Blog Post

Data Mesh to Go: How to Get the Data Product

Using DDD artifacts to get a data product for data mesh

Article

HTTP Feeds

Asynchronous interfaces don’t always require the use of Apache Kafka or RabbitMQ. They can also be designed without middleware just by means of HTTP APIs.

Blog Post

The Way of the Request

The Play Framework is a web application framework for Scala and Java inspired by Ruby on Rails. Although I like the official documentation, I always found it lacking in how requests runs through the framework. This article takes the reader on a journey tracing a request through the framework.

Blog Post

Das Test-driven Development für eine Conversational AI
Blog Post

Software quality in the context of value chains and evolution

Quality goals help to make more informed architectural decisions. However, identifying a set of the most needed qualities is a challenging task. Quality requirements are strongly dependent on the perspective of individuals. The importance of certain qualities also changes over time. In this blog post, I introduce an idea that helps to understand qualities in terms of their relevance (and non-relevance). We discover how qualities interplay with value creation activities and evolution by using the ISO 25010 quality model together with Wardley Maps as a foundation.