Flow To Go

If you want to do Flow-Based Programming in Go, there are a couple of frameworks and libraries available. Or you simply do it with pure Go. After all, how difficult can it be?

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. Travis Enterprise For...

Go Developer Survey

I joined GoTime to talk about the results of the 2016 Go Developer Survey and other interesting Go projects and news. Listen to the podcast at https://changelog.com/gotime/38 Transcript Erik St. Martin: Welcome back, everybody, to another episode of GoTime. Today’s episode...

Sometimes Boring Is Better

Distributed Locking with Redis

At ContaAzul, we have several old pieces of code that are still running in production. We are committed to gradually re-implement them in better ways. One of those parts was our distributed locking mechanism and me and @t-bonatti were up for the job. How it was In normal workload...

How to separate Unit and Integration tests in Go

Usually integration tests take long time, because they’re doing real requests to real system. And it’s not necessary to run them every time we type go test. For example we have Golang client to work with PayPal SDK, it has some exported functions to send data to PayPa...

How to mock exec.Command in Go

In some of my projects we have code that needs to run external executables, and it’s very difficult to test them, especially when your function is based on some kind of stdout parcing. So how to mock these commands in Go? Let’s check how this goal is achieved in os/ex...

Get into the flow

In Flow-Based Programming, programs are modeled as data flowing between independent processing units. Who would not think of channels and goroutines as a natural analogy?

Package Oriented Design

Updated on February 28th, 2017 Prelude This post is part of a series of posts designed to make you think about your own design philosophy on different topics. If you haven’t read these posts yet, please do so first: Develop Your Design Philosophy Design Philosophy On Packaging...

playgo - CLI tool to send .go file to the Go Playground

Usually when we share a runnable Go code we do: copy code, open Go Playground, paste code, click Share.