1º Open Source Joinville Meetup
Shared some tips about managing medium-sized OpenSource projects. The slides are in Portuguese.
Integration Testing in Go: Part II - Set-up and Writing Tests
Prelude This post is the 2nd installment of a 2 part series about integration testing. You can read the first installment, which is about executing tests in a restricted environment using Docker. The example repository that this post draws it examples from can be found here. Intr...
Be wary of functions which take several parameters of the same type
APIs should be easy to use and hard to misuse. — Josh Bloch A good example of a simple looking, but hard to use correctly, API is one which takes two or more parameters of the same type. Let’s compare two function signatures: What’s the difference between these functions? O...
go.mod's go directive
Recently I ran into a curious behavior related to the go directive in the go.mod file. It’s well documented, but it’s nevertheless surprising. Go 1.11 introduced support for modules, as a way to define a collection of related Go packages. You can find details about it...
The Golang News mobile app
tl;dr I wrote a Golang news aggregator mobile app, I open sourced it. If you use Android, you can get the app. It is no secret that I am a huge fan of the Go language! Go has proved to be a very reliable partner in my projects, whether the project in question is personal or prof...
Don’t force allocations on the callers of your API
This is a post about performance. Most of the time when worrying about the performance of a piece of code the overwhelming advice should be (with apologies to Brendan Gregg) don’t worry about it, yet. However there is one area where I counsel developers to think about the p...
Google Home Action to manage your Kubernetes cluster
I always wanted to find a good use case of Google Home to make some DevOps tasks funnier. For example voice deployments, system metrics, etc. Since I use Kubernetes a lot, I thought it would be fun to control it via voice commands.
Why is DevOps Important?
1. What are four keys for great DevOps? Collaboration: DevOps requires collaboration, both within teams and between teams. Good communication between teams implies to break down silos, which can be harder than it sounds in organizations where a leader and their team are rewarded...
Moving on with Gratitude
In a lot of ways, I owe my professional career to music. If it wasn’t for music, I wouldn’t have learned about samplers, sequencers, MIDI and the crazy world of synthesizers. Those machines led me to computers and computer music which led me to both sound engineering...
Go compiler intrinsics
Go allows authors to write functions in assembly if required. This is called a stub or forward declaration. package asm // Add returns the sum of a and b. func Add(a int64, b int64) int64 Here we’re declaring Add, a function which takes two int64‘s and returns their s...