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Microservices? Or Rather Monoliths?

Microservices are a hype. Now, critics suggest to return to monoliths. But does that really help?

A Playground for Testing OpenID Connect

This post describes how you can set up a development environment in order to play around with your OpenID client implementation. When running your application in a cluster, it can be difficult to test how it will behave behind a load balancer. One factor that can be particularly difficult to test is when you are communicating with an OAuth 2.0 or OpenID Connect server which expects that a request will be redirected back to the same application instance that it came from.

Native Clojure with GraalVM

Spring-less testing

Spring is a great project, it helps a lot with common, usually mundane, tasks. But it’s not always unicorns and rainbows. Too much Spring in tests can cause a few issues like long execution time and fragility. Here, I’m showing how to avoid such pitfalls.

Secure Kubernetes Cluster

Containers and Kubernetes have greatly simplified the way we bring software into production. Applications can be packaged in container images and run on a Kubernetes cluster with 5000+ nodes. However, it should not be forgotten that, despite being encapsulated in containers, various aspects of safety still have an important role to play.

dprox – Declarative Reverse Proxy

Taking Screenshots of DOM Elements

Now that PhantomJS is dead, we need an alternative. Turns out that Puppeteer, Google’s official remote-control API for Chrome, is just the ticket.

Mundane Bash Tips

Various tips and patterns for writing shell scripts.

Have YOU been pwned?

How to check your passwords securely and effortless

Enforce strong passwords!

Frequent leaks of large user databases highlight how important it is to enforce strong passwords. Let’s discuss what makes a strong password and why it is a good idea to additionally check it against a dictionary.

It All Looks the Same to Me

In the previous post, pHash helped us to summarize our photo album. Now it’s time to employ BK-trees and efficiently search through the metric space of perceptual hashes. Let’s roll up the sleeves; more Rust awaits!

The language of maths is not the language of your business

Formatting with first-class types

Programming with stringly-typed APIs is like walking a tightrope; it’s good to have some support in case something goes wrong. Languages with first-class types offer us impressive tooling to guarantee correctness of our code. In this post, we’ll see how Idris helps us bullet-proof a printf function.

That looks oddly familiar

Perceptual hashing is an exciting technique for processing media files and finding similar content. In this post, we combine Rust and pHash to find perceptual similarities in our photo library.

Carbon dioxide monitoring with Rust, InfluxDB and Grafana

Media Art Opens Up New Perspectives

The more technological developments progress, the more we use digital innovations to shape our lives. Codes and algorithms play a decisive role in determining how we use and perceive information. Media artists do not remain untouched by this phenomenon. Through their digital works of art, they take a stand on many questions facing our society. Media art reveals new perspectives, but also reminds us of the responsibility borne by technology companies and software developers.

Supporting understanding with simplicity

Why do we even talk about simplicity? Why is it such a hot topic? Why is nobody praising complexity? Why do things like the KISS exist?

What’s in a Name: Evaluate

Elm in the wild: A Sandwich Delivery Game

New languages often look shiny and cool in their playground examples. But bringing them out into the wild and having to code more than just the examples in the tutorials, often reveals the true value of these new languages. So, in order to evaluate the shininess of Elm, a language compiled to JavaScript and used for building web front ends, we decided to use it for a scoped project: We programmed the Sandwich Delivery Game for the “Smart City” exhibition in Basel, Switzerland.

ROCA-Compliant Table Sorting

The article presents an easy way to enable table column sorting without JavaScript. In addition to the avoided complexity, the solution is also compliant to ROCA.

Remain resilient, fail fast

Marrying Rails, Turbolinks and JavaScript Custom Elements

Rails 5.1 just arrived and brought with it a curated setup for webpack. Think what you want about webpack, but it’s the new default for JavaScript module loading and bundling in Rails and therefore here to stay. So here’s a quick post on how to get the new JavaScript goodness up and running with your existing Turbolinks setup.

Rendering Self-Contained Custom Elements

This is a response to Paul Kinlan’s post on creating custom elements, explaining how JSX can be used for declarative templating.

Building Component-Based Front Ends with Rails

How Browsers Load and Process JavaScript

This is a rundown of how browsers process JavaScript references within HTML.