Improving Jekyll build time

I’ve been using Jekyll on my blog since 2012. It is great! But, lately, its slow build times started to bother me. I consider moving to Hugo, but that seemed like a lot of work, and I didn’t know what the real problem was. In this post I’ll show how I improved my Jekyll blog build time in about 75%.

70% cheaper Kubernetes cluster on AWS

We are running Kubernetes on both sandbox and production for some months now. Our production cluster is still small, with few services running on it, but, most of our sandbox environment is running on a Kubernetes cluster on AWS.

Writing cli applications with Golang

Last few months I’ve been using Go to write quite a lot of tools. In this post I intent to show not why I chose Go over others, but how I architect those tools, what libraries I use and what kind of automation I have in place.

Measuring production code coverage with JaCoCo

Microservices is the new fancy way of doing applications. Yet, most companies still have big and old monoliths in production. In fast evolving software of this size, it’s usual to have lines of code which are never executed in production. Production code coverage reports can help us find those lines.

From Travis Enterprise to BuildKite in 50 repositories

At ContaAzul, we use the CI infrastructure a lot. We open several pull requests in several projects every day, and we block the merge until the build pass. We consider our master branches are sacred, and we can’t afford too much waiting to change them.