There are a myriad of tutorials on Redis in almost every programming language. Many will cover how to make a to-do list, so why write another one? Well, I want to write a tutorial that is language agnostic and only uses Redis commands and Lua scripts (the build-in scripting language of Redis).

A Table of Contents helps users navigate (long) blog posts. I use them on both posts and post. The desktop version always shows the table on the right side in the sidebar (using a text-widget with a shortcode). On mobile, I’ll only show it on long articles, using a shortcode under the first paragraph.

In WordPress you have two main taxonomies: categories and tags. I use categories as a taxonomy tree. That is why I want to show the submenu on the category page. It does not come out of the box, so I created something that renders the submenu items for me.

Recently, I worked on my theme for KeesTalksTech. To gain performance, I need to rely less on plugins, that’s why I needed a simple way to show small lists of posts in my sidebar.

I’ve created 2 short codes: one that shows recent posts, used in the new section and one that shows specific posts, used in the highlights section.

The JavaScript Array has everything to acts as a nice Stack structure, the only thing is missing is a peek() method. In this blog I’ll discuss two ways of implementing a stack based on the array.

Ever since I stumbled upon the Scrutor project, I wanted to write a blog about building latency and exception logging decorators. At Wehkamp we used StructureMap in the past, but as it became obsolete and swapped out, I missed the decorators. What I love about Scrutor is how it is an extension on the way […]

At Wehkamp we use Redis a lot. It is fast, available and implemented as a managed AWS service called ElastiCache. Sometimes we need to extract data from Redis, and usually I use the redis-cli to interact from the command-line. But what if you need to get the values of 400k+ keys? What would you do? Is there an effective way to query multiple key/values from Redis?

Lately I’ve been tinkering around with my blog to see if I could get a better score in Google Web Vitals. The “Avoid Excessive DOM Size” attracted my attention. The details showed that my code fields were to blame. I use Google Prettify as it is lightweight and does a pretty good job, but… it renders way too much span elements. Let’s see if we can make it spit out less.

Dependency Injection (DI) helps us to change the behavior of parts of our program on the fly. This is especially neat when you want to test your domain services against a mocked data-store. But what if you need to change the behavior of your API based on a request header?

Yesterday I had a discussion with my colleague Robert Kranenburg about this. He showed an example of a console application changing its behavior based on an argument. I took the idea and converted it into .NET Core 3.1 code to change behavior based on a cookie.

Let’s see if we can use PIL to crop model images and resize them to a 2:3 ratio using Python Image Library (PIL). When all images on an overview are the same ratio, the overview looks way nicer. And… let’s try to make the model on the image, the center of the image.