One of the most complex operations in tech is upgrades or migrations without disrupting the service. I always compare it to upgrading a…

Yes, another post about optimization and MongoDB. I started this post in July, and I couldn’t find the time to finish this. I was optimizing…

Although I have some experience, I am not a sysadmin. So this might be obvious for a sysadmin or someone with an AWS certification but not…

Do you want to run the Github Action runner as a container? Do you want to run it on your Docker or Kubernetes cluster and scale the number…

Our CI+CD has been working for 5 years long. You know, if it ain’t broken, don’t fix it. But the company is not the same. It’s time to…

If you, a backend developer, had to describe your job, what would you say? We usually talk a lot about servers, clusters, layers, algorithms…

I have been trying to find any comparison between FluxCD and ArgoCD that could help me choose between them. I haven’t found any that truly…

I sometimes take a peek at the Github charts, I find interesting what they speak about. I have never looked thoroughly at the activity…

o11y = observability = logs, metrics, traces This post is a summary of the steps we unconsciously followed in Playtomic when digging into…

I see this a lot in Stackoverflow and most of the replies always makes me wonder what kind of software is running over there. People ask…

This is a bad practice in my opinion if your database is owned by one application (or service). It is the usual scenario when using…

Do you know that hours of trial and error can save you minutes of reading documentation? Well, that was not the case today because I wasn’t…

Yes, I’m learning a new language. A typed one =D I love C++. Some of my best code and all my research was done in C++. But I hate its…

There must be hundreds of artists trying to mix art and computing. I have always wanted to try to perform some experiments on this topic. It…

I have seen several people sharing their contribution graph in Github. Some of them, bragging about how dark and green their graph is. A few…

This is not a technical entry, but I still think it is worth to be written. I used to be a hardcore gamer. Hundreds of titles, thousands (I…

Documentation is always the victim when developing a system. We will do it tomorrow. And tomorrow… I’m writing this because we had a deep…

Every time I see a I tremble. How do you expect to test that in a simple / coherent / easy to follow way? When I see that code, I usually…

Another too fast, too furious post. I have spent a few hours trying to make my event processor multi-threaded, and it’s so damn easy that I…

This is a quick and dirty post, but I promised I would publish everything I research at Playtomic. Last week, we were having a discussion…

I never thought that one of the things that would impress me the most when visiting New York City, would be seeing a Russian Soyuz. It was…

Time to talk about security today. Security is one of the most important aspects of a system, and probably one of the most boring to…

Continuous Integration + Continuous Deployment. Repeat with me: there is no agile without CI+CD. Continuous deployments get you to the next…

Last February I made 2 years in Playtomic. Everything goes so fast that it feels like 2 decades. It goes so fast that I started to write…

I love writing queries using Spring Data’s Criteria. Writing queries directly in SQL (@NativeQuery, @Query) feels a bit dirty. And I also…

Your continuous integration (CI) pipeline is one of the most important pieces of software you can have in your business: it runs every time…

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