Golang is famous for its concurrency management. I'll describe and give examples of how to use one of its most powerful features: goroutines. At SumUp, we've started using Golang in our daily lives. It's an incredible language to write services and tools. …

It's time to take a step further and beyond namespaces. First, we need to finish our container's process isolation and then isolate the container's filesystem. This post is the second post of my series Containers from Scratch. If you want to access the first part, click here. …

There is no better way to learn something than by building it. So let's understand and build a container from scratch. Nowadays, almost everything is using containers, and at SumUp, it isn't different. Since we use it a lot, I want to improve my understanding of containers and how it…

Everybody loves Alpine images because they are light and have a smaller attack surface, but maybe they are not the best option anymore. It's time to talk again about distroless images. At SumUp, we use Kubernetes with Docker images a lot, so we are always looking for the best options…

Defining or not CPU limits for your pod is a controversial discussion. Let's talk a little bit about this. Defining resources requests and limits is not easy for complex applications, it requires a lot of testing and monitoring. …

While writing this the Jarvis machine still up and I found out there is more than one way to solve this machine, maybe one of them is easier than mine. I will not expose all approaches here but the one I used to solve. Enumeration I made a simple enumeration which…