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Blog

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.

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

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.

Have YOU been pwned?

With the V2 release of the “pwned passwords” database came a new feature called range search, which allows to securely check passwords with only minor efforts. Here’s how to use it.

It All Looks the Same to Me

Fast Search Through Metric Spaces with Rust and BK Trees

The language of maths is not the language of your business

Abstractions from category theory can be powerful. But there are reasons why you may want to keep your domain model free of them.

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

In which Rust and perceptual hashing come together.

Carbon dioxide monitoring with Rust, InfluxDB and Grafana

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

What’s in a Name: Evaluate

The term evaluation is often used in the context of system and architecture reviews. In my opinion, this term is often misleading and such activities should be named differently.

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

Remain resilient, fail fast

Keep your systems resilient to broken connections and unreliable networks. Unless it’s start-up time.

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

Building Component-Based Front Ends with Rails

Our latest Ruby on Rails front-end project strongly emphasizes a component-based approach. In this post, we briefly explain how a tiny helper not only helped us render UI components, but also resulted in better components thanks to well-defined contracts and effortless composition.

How Browsers Load and Process JavaScript

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

The Power of the HTML Form

Simplicity - Fighting Complexity At All Costs

My colleague recently wrote an excellent post discussing the functional and object-oriented paradigms. As someone who comes from a functional programming background, I definitely agreed with one thing: We need to stop building arbitrary walls that prevent us from learning from and helping each other.

FP vs. OO

I recently came across a tweet stating that there were no people who “defend OO vs. FP” that actually used FP in real projects. This is not the first time I came across statements like this (like in a blog posts portraying functional programmers as being higher on the “evolutionary ladder” than object-oriented programmers). Another claim I hear again and again is that “only Functional Programming can solve the problems of the modern age (like multi-core computing)”. I disagree with both claims.

Progressive Web Components

Self-contained Systems: A Different Approach to Microservices

Microservices are the current hype in the Software Architecture community. However, microservices can be used in many different scenarios to reach different goals. Self-contained Systems (SCSs) are one approach to achieve some of those goals while avoiding many common pitfalls.