Category: Tech

Last year we decided to replace our Ubuntu servers with NixOS. We were still on Ubuntu 14.04, so we also had to upgrade all the services and tools, including PHP, MySQL, HAProxy, etc. As you can imagine, this was a lot of work, and you might be asking yourself, “why didn’t you just upgrade Ubuntu?” […]

Concurrency in Go is an extensive topic, and we won’t cover all the things in this post. There are tons of articles and several books that cover concurrency in depth. The goal of this post is to cover topics between basic and advance. We’ll cover the usage of sync.WaitGroup and channels. Those two things combined […]

Earlier this year, on one of our half-yearly IRL’s, we had a discussion about whether or not we should proceed with a massive upgrade…

This post will briefly discuss H12 errors on Heroku, more commonly known as request timeouts, how we tackled them, and how we fixed them. Before we start, let’s establish some context. We have an app that’s a hub for ~600 servers. A few times per day, each server creates a request to the app, ensuring […]

Last year, we wrote a blog post on how we use Heroku’s Review Apps to create staging apps for every Pull Request submitted to a project’s repository. These apps are created and deployed automatically, completely isolated from the production environment, and contain the changes from the Pull Request. This allows every stakeholder to see how […]

I’ve been a Python dev for almost 15 years now and I’ve recently completely overhauled how I keep my development tools and dependencies in check. I’m so happy with my new setup that I couldn’t wait to share it with fellow geeks! Some background I used to use Homebrew to install tools such as pyenv […]

The title could sound like the beginning of some joke, but the modern design field attracts more and more professionals that don’t do that much drawing but build new systems and experiences. This year FITC Amsterdam again gathered a lot of great professionals to share their most interesting projects and thoughts. Now I’d like to […]

These are my notes from the Reading Nix expressions talk in NixCon 2019. Nix package language has a similar syntax to the “JSON meets functional language concepts”. E.g. you have Let-expressions which I would say is a functional concept (ref: https://en.wikipedia.org/wiki/Let_expression) – I first saw it in Elm and Haskell. An important thing to keep […]

It’s been a few years since I’ve been to a smaller conference and I made the right choice to visit NixCon 2019. It was held in a really nice coworking space called Impact Hub in Brno. There were 2 tracks and about 180 people attending. Generally speaking, smaller conferences like this one will give you […]

Last week I attended my first two frontend conferences – CSSConf & JSConf Budapest 2019. My week in Budapest started with Rust meetup. Sadly the organizers didn’t expect that any foreigners will attend the meetup. Half an hour long talk wasn’t enough for me to learn any Hungarian, but I still had a great time […]