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Automatic TLS certificate distribution with Vault

It’s often recommended that microservice communications are encrypted, especially if they cross the public internet. Even when you control the network, whether virtually or physically, encrypting traffic can still be valuable. Lets Encrypt has revolutionized the distributio...

Interface Values Are Valueless

Introduction I’ve been seeing a lot of question about interfaces lately on Slack. Most of the time the answers are technical and focus on implementation details. Implementation is important to help with debugging, but implementation doesn’t help with design. When it comes to...

Moving to Hugo

After some time, I finally decided to move my blog from Jekyll to Hugo. That was probably the best thing I did in the past few weeks. My Jekyll builds were really slow, and the feedback loop was too big. I get easily distracted, so, I was not writing much. You can read some of m...

Advanced gRPC Error Usage

How to best handle errors in Go is a divisive issue, leading to opinion pieces by illustrious bloggers such as Dave Cheney, the commander himself Rob Pike as well as the official Go blog. I’m not going to tackle those opinions here, instead I’m going to talk about bes...

Using Machine Learning to help us communicate better

How to Disable http.FileServer Directory Listings

A nice feature of Go's http.FileServer is that it automatically generates navigable directory listings, which look a bit like this: But for certain applications you might want to prevent this behavior and disable directory listings altogether. In this post I’m going to run...

Command-line autocomplete for Go documentation

Updated (2023-03-06) Go has a great, well documented standard library. You may find yourself spending a fairly significant chunk of your Go programming time digging in stdlib docs, which is reasonable to expect at least for novice Go coders. How do folks look for stuff in the doc...

When using Microservices or Modular Monolith in Go can be just a detail?

Nowadays we can often hear that monolithic architecture is obsolete and responsible for all evil in IT. We often hear that microservices architecture is a silver bullet which helps to kill all this monolithic evil. But you probably know that there are almost no silver bullets in...

2º Joinville Go Meetup

It was the Go 1.10 Release party - my talk was about what changed in Go 1.10.