Carlos Becker

Still doing less, for her

Tue, 07 Jul 2026 00:00:00 -0300

My daughter was born, and I did, in fact, manage to do less.

GoReleaser announcements are moving

Sat, 04 Jul 2026 00:00:00 +0000

From now on, GoReleaser release announcements will only be published on the GoReleaser blog.

AI didn't kill portfolios

Tue, 26 May 2026 00:00:00 +0000

I used to think that my GitHub profile helped me because people could read my code.

Unsubscribe from a GitHub organization

Wed, 20 May 2026 00:00:00 +0000

Just leaving the organization is not enough.

Hello, GitHub

Tue, 31 Mar 2026 00:00:00 +0000

On to the next thing!

Mapping Brazilian Cell Towers

Mon, 30 Mar 2026 15:18:07 -0300

I was curious about how many cell towers were around me - so I built the tool I wanted.

Keeping sponsor lists up-to-date

Wed, 25 Mar 2026 00:00:00 +0000

Keeping sponsor lists up-to-date across multiple READMEs and websites is tedious - so I wrote a tool to automate it.

Goodbye, Charm

Tue, 24 Mar 2026 00:00:00 +0000

Working at Charm has been the best thing to happen in my career so far.

You'll never see my child's face

Fri, 06 Mar 2026 00:00:00 +0000

I became a dad recently, and I’m not publishing a bunch of photos of my kid like most parents do. Some people started asking me why, so here it is.

How GoReleaser strengthened security through GitHub's Secure Open Source Fund

Tue, 17 Feb 2026 00:00:00 +0000

GoReleaser builds and ships release artifacts for thousands of projects, making it a high-value supply-chain target. That’s why we were thrilled to be selected for the third session of the GitHub Secure Open Source Fund.

Taste

Tue, 03 Feb 2026 00:00:00 +0000

Code is cheap, show me the… what exactly?

Doing less, for her

Sun, 01 Feb 2026 16:48:29 -0300

My daughter will be born soon, and I’m reflecting on what that means for my open-source work.

Ultimate Go Software Design LIVE: Ep.63

Tue, 06 Jan 2026 00:00:00 +0000

A live coding stream with Bill Kennedy, Kevin Enriquez, Andrey Nering, and me.

LIVE from GitHub Universe: Inside the GitHub Secure Open Source Fund

Sun, 04 Jan 2026 00:00:00 +0000

I had a chat with Greg Cochran (GitHub), Christian Grobmeier (log4j), Michael Geers (evcc), and Camila Maia (ScanAPI) about the GitHub Secure OpenSource Fund.

It was recorded at the last day of GitHub Universe 2025.

OpenSource Fridays Brasil

Fri, 05 Dec 2025 00:00:00 +0000

I was in a live stream with Pachi Parra, talking a bit about my background, and about GoReleaser.

Signing Git commits and tags with SSH

Wed, 19 Nov 2025 00:00:00 +0000

You can sign Git commits and tags with SSH keys instead of GPG.

Pinning GitHub Actions

Mon, 17 Nov 2025 00:00:00 +0000

If you’re using GitHub Actions in your projects, you should be pinning your actions to specific commit SHAs instead of using tags or branches.

Escovando Bits #63 - Side projects que pagam as contas: guia realista

Thu, 18 Sep 2025 00:00:00 +0000

We had a chat about side projects, OpenSource, and making money out of it — in Portuguese.

Building GoReleaser: from shell script to paid product

Sat, 19 Jul 2025 00:00:00 +0000

In this post, I want to share the history behind GoReleaser, how we got here, lessons I’ve learned along the way, and what’s ahead.

Codecon Summit 2025 - Building GoReleaser

Sat, 19 Jul 2025 00:00:00 +0000

I’ve talked about how GoReleaser came to be, shared some lessons learned, and more.

Moving on from Nix

Tue, 17 Jun 2025 00:00:00 +0000

After using nix in my dotfiles for over 2 years, I’m now moving away from it.

Here’s why.

Gophercon Latam 2025 - Serving TUIs over SSH using Go ✨

Mon, 05 May 2025 00:00:00 +0000

My talk at Gophercon Latam 2025, showing a brief history of terminals, an introduction to ANSI escape sequences, a briefer introduction to SSH, and finally, how to build and serve a TUI using Bubble Tea and Wish.

Fallthrough #17 - Maintainers, Monetization, and Making The Time

Mon, 28 Apr 2025 00:00:00 +0000

Had an amazing chat with Matthew and Angelica about being a maintainer, monetization, making time, and GoReleaser.

Custom YAML marshal/unmarshal with Go

Wed, 19 Mar 2025 00:00:00 +0000

string and []string can be the same thing…

Live chat: Elton Minetto and Carlos Becker

Wed, 26 Feb 2025 00:00:00 +0000

A live chat with Elton Minetto about learning Go, GoReleaser, and more, in preparation for Gophercon Latam 2025 (in Portuguese).

Cup o' Go #100 - The strength of Go in the job market 📈, and some stress relief with Carlos Becker 🚀

Fri, 21 Feb 2025 00:00:00 +0000

Had an amazing chat with Jonathan and Shay about GoReleaser and other topics.

svu v3

Thu, 20 Feb 2025 00:00:00 +0000

Back in 2017, I got tired of manually checking and creating git tags.

Using GoReleaser and GitHub Actions to release Rust and Zig projects

Thu, 02 Jan 2025 00:00:00 +0000

GoReleaser v2.5 is out with Rust and Zig support - let’s explore how we can use it!

Testing only changed Go packages

Mon, 30 Dec 2024 00:00:00 +0000

Sometimes, working on big projects, running all tests locally take too much time.

Automatically merge dependabot pull requests

Wed, 11 Dec 2024 00:00:00 +0000

A couple of weeks ago I added a small automation to automatically merge dependabot pull requests if the build succeed.

Side Projects Reverie

Fri, 29 Nov 2024 00:00:00 +0000

A short reflection on side projects, and how I do them.

Increasing GitHub Actions Disk Space

Sun, 17 Nov 2024 00:00:00 +0000

A couple of days ago, all of a sudden, my jobs started running out of space.

Using AI to aid color scheme migrations

Thu, 31 Oct 2024 00:00:00 +0000

Recently I found a good use case for AI when migrating my dotfiles to another theme. This is a short post about it.

I love Continuity Camera, I hate Continuity Camera

Fri, 11 Oct 2024 00:00:00 +0000

Continuity Camera is the macOS feature that allows you to use an iPhone as a webcam.

Gumroad, where is my money?

Wed, 09 Oct 2024 00:00:00 +0000

I’ve been using Gumroad for payments of GoReleaser Pro since the beginning, around May 2021.

Setting up a Wireguard VPN in UniFi

Sat, 31 Aug 2024 00:00:00 +0000

This is a quick post showing how to set up a Wireguard VPN in an UniFi Dream Machine.

Interview with Josh Medeski

Sat, 24 Aug 2024 00:00:00 +0000

In this interview I talk with Josh about my developer workflow including tmux, neovim, nix, and more on macOS.

Semana acadêmica ISEPE

Mon, 12 Aug 2024 00:00:00 +0000

I talked a bit about my career to some first year college students.

A pragmatic guide to Go module updates

Wed, 19 Jun 2024 00:00:00 +0000

I thought I would share some quick bits about how to do go.mod version bumps.

Starlink: installation, first impressions, and running it through UniFi

Sat, 08 Jun 2024 00:00:00 +0000

This weekend’s side quest: installing Starlink as my second internet provider. Here’s how it went.

Updating Snapcraft secrets

Thu, 30 May 2024 00:00:00 +0000

If you, like me, release your projects to the Snap Store using GoReleaser, you might need to eventually update the secret.

GoTime #311 - Ship software, not code

Tue, 09 Apr 2024 00:00:00 +0000

I was live with Natalie to discuss how GOOS and GOARCH spark joy.

Automating my hard-to-automate garage doors

Tue, 07 Nov 2023 00:00:00 +0000

This is how I automated my garage doors without using a BTN interface.

Integrating Alarm Systems with Homekit

Sat, 04 Nov 2023 00:00:00 +0000

This post documents my journey implementing a Homekit integration for my Intelbras AMT8000 alarm system.

Getting love for your open source project, aka, marketing?!

Mon, 30 Oct 2023 00:00:00 +0000

Twitter Spaces with some OSS developers:

A brief and incomplete history of modal text editors

Sun, 20 Aug 2023 00:00:00 +0000

In this post I’m going to talk about some old text editors you probably never heard of, what is modal text editing, and why people like it so much.

Wishlist Endpoint Discovery

Thu, 20 Jul 2023 00:00:00 +0000

Learn how to use the recently-added Tailscale, DNS, and Zeroconf endpoint discovery in Wishlist, our SSH host directory.

Writing Bubble Tea Tests

Mon, 08 May 2023 00:00:00 +0000

Learn how to use x/exp/teatest to write tests for your Bubble Tea apps.

Using open, pbcopy and pbpaste over SSH

Mon, 24 Apr 2023 00:00:00 +0000

Having your favorite commands available over SSH can be very convenient.

My workflow, part 1

Mon, 09 Jan 2023 00:00:00 +0000

I keep getting asked how my setup works, how I use tmux and nvim over ssh… all that good stuff.

Marshaling SSH Private Keys - Why there's always a different block?

Tue, 20 Dec 2022 00:00:00 +0000

Not long ago, when I was building melt, I learned something interesting.

🎧 Replay: 2022

Fri, 25 Nov 2022 00:00:00 +0000

This is a different kind of post: I’m sharing some music I enjoyed this year!

GoReleaser v1 — one year later

Mon, 14 Nov 2022 00:00:00 +0000

We launched GoReleaser v1 exactly 1 year ago today!

GoReleaser Split and Merge

Sat, 12 Nov 2022 00:00:00 +0000

Since v1.12.0-pro, GoReleaser can split and merge its release process.

Expanding GitHub Sponsors globally - GitHub Universe

Wed, 09 Nov 2022 00:00:00 +0000

GitHub Sponsors expanded to over 30 new regions this year, Abigail Cabunoc Mayes chatted with three developers from India, Brazil and Egypt about building careers in open source.

Issuing and using SSH Certificates

Wed, 09 Nov 2022 00:00:00 +0000

SSH certificates allow system administrators to SSH into machines without having to manage authorized keys in the servers.

Sustainability in Open Source - Github and Charm

Thu, 20 Oct 2022 00:00:00 +0000

Talking about improving sustainability of open source with some incredible open source community members. We highly recommend checking out their profiles to see the cool projects they’re working on!

Creating a tag and releasing from a GitHub Action, with GoReleaser

Wed, 14 Sep 2022 00:00:00 +0000

Most people run GoReleaser by creating a tag locally, pushing it, and letting their CI takes care of the matter.

Enabling Nightly releases using GoReleaser Pro

Sun, 28 Aug 2022 00:00:00 +0000

GoReleaser Pro v1.11+ added support to keeping a nightly release.

Shipping completions for Go CLIs using GoReleaser and Cobra

Mon, 22 Aug 2022 00:00:00 +0000

Everyone likes command line completions, so much that some even install extra tools just to have them.

SSH Tips and Tricks

Tue, 09 Aug 2022 00:00:00 +0000

Since I joined Charm, I’ve been working and learning more about SSH, and I thought I would share a few quick tips and tricks with you.

The Maintainers of OSS @ Equinix

Wed, 15 Jun 2022 00:00:00 +0000

A conversation about maintaining OSS and other software-related topics.

My tmux workflow

Mon, 06 Jun 2022 00:00:00 +0000

I wanted to share a quick thing that made my life easier on tmux lately, but before we dig into that, I feel like I need to explain how I usually work.

Open Source Brasil Maintainers Event @ GitHub

Thu, 02 Jun 2022 00:00:00 +0000

A conversation about maintaining OSS — in Portuguese.

@TwitterDev x @Charmcli: Developer Tools discovery session

Thu, 19 May 2022 00:00:00 +0000

Twitter Spaces with Twitter and Charm folks, discussing favorite developer tools.

Using SSH Certificates with Go’s SSH Client

Mon, 16 May 2022 00:00:00 +0000

A couple of weeks ago I was working on adding SSH Certificate Authentication support to Wish, and did not find any good, to the point documentation on how to use certificates from the Go SSH client — hence this post.

Joining the split keyboards club: a Moonlander story

Sat, 07 May 2022 00:00:00 +0000

This post will describe my experience with a couple of firsts:

Reproducible builds with GoReleaser

Tue, 26 Apr 2022 00:00:00 +0000

GoReleaser can help you, to some extent, to have reproducible builds.

Forwarding Discord's RPC socket over SSH

Wed, 02 Feb 2022 00:00:00 +0000

I’m doing 99% of my coding in a “big” machine instead of my laptop. I do that by SSH’ing into it, hopefully into a tmux session, and coding on Neovim.

git-worktree is awesome

Thu, 27 Jan 2022 00:00:00 +0000

I’m still mad I haven’t found this out before.

./charm.sh

Tue, 28 Dec 2021 00:00:00 +0000

$ glow charm.md

MacBook Pro 14 - a quick review

Wed, 22 Dec 2021 00:00:00 +0000

I got a MacBook Pro 14" with an Apple M1 Pro SoC, 16GB of memory and 500GB of disk a couple of weeks ago, and wanted to write my impressions about it, since a lot of people ask.

Changelog grouping with GoReleaser v1.1

Fri, 03 Dec 2021 00:00:00 +0000

In the v1.1 release, GoReleaser introduced a new feature called “changelog groups”. This is a quick post to spread the word.

Testing Linux packages on GitHub Actions

Sun, 21 Nov 2021 00:00:00 +0000

One issue we had from time to time on GoReleaser was related to its Linux packages.

Hacktoberfest Brasil Golang Meetup

Thu, 28 Oct 2021 00:00:00 +0000

A hands-on talk on how to create and set up a project with GoReleaser. In Portuguese.

Schwarz Golang Monthly Meetup

Fri, 22 Oct 2021 00:00:00 +0000

A hands-on talk on how to create and set up a project with GoReleaser.

Using the new prebuilt builder on GoReleaser

Sun, 12 Sep 2021 00:00:00 +0000

You can now import pre-built binaries into GoReleaser!

Signing releases with cosign and GoReleaser

Tue, 24 Aug 2021 00:00:00 +0000

In GoReleaser v0.176.0 (both OSS and Pro), we released the ability to sign Docker images - with cosign in mind, and also did small quality-of-life improvements in the artifact signing feature.

Supply chain integrity with GoReleaser using Go mod proxy

Mon, 23 Aug 2021 00:00:00 +0000

Since the infamous SolarWinds attack, supply chain integrity is something a lot of people are discussing and working on.

Multi-platform Docker images with GoReleaser, Podman and GitHub Actions

Sun, 01 Aug 2021 00:00:00 +0000

A few months ago, I published a post on Multi-platform Docker images with GoReleaser and GitHub Actions. Today’s post has the same idea, but using Podman instead of Docker.

Incrementally measuring my internet speed with Prometheus

Thu, 29 Jul 2021 00:00:00 +0000

I live in Brazil, and, if you’re not familiar, internet usually sucks here.

Sri Lanka Golang meetup

Fri, 23 Jul 2021 00:00:00 +0000

A hands-on talk on how to create and set up a project with GoReleaser.

Using GoReleaser includes feature

Sat, 03 Jul 2021 00:00:00 +0000

GoReleaser Pro was released about a month ago, and with it, the ability to include GoReleaser config files.

Announcing GoReleaser Pro

Sun, 30 May 2021 00:00:00 +0000

After more than 4 years working on GoReleaser, I’m launching a Pro version!

GoTime #173 - Releasing with (and without) GoReleaser

Thu, 01 Apr 2021 00:00:00 +0000

I was live with Mat, Natalie & Johnny and we talked a bit about releases, with and without GoReleaser.

GoReleaser: 4 years releasing software

Thu, 07 Jan 2021 00:00:00 +0000

Last year, I made a blog post about GoReleaser turning 3 years old.

macOS Command Line Tools

Wed, 16 Dec 2020 00:00:00 +0000

Today, again, I forgot the command to install Command Line Tools and had to search for it.

Why I migrated to the Fish Shell

Mon, 07 Dec 2020 00:00:00 +0000

Back in June, I started porting my dotfiles from ZSH to Fish. Here’s why.

Multi-platform Docker images with GoReleaser and GitHub Actions

Mon, 30 Nov 2020 00:00:00 +0000

GoReleaser v0.148.0 is out, and with it, the ability to release multi-platform Docker images, a.k.a. Docker Manifests.

Making Python respect Docker memory limits

Fri, 20 Nov 2020 00:00:00 +0000

If you run Python inside containers, chances are you have seen Linux’s OOMKiller working at least a couple of times.

Kubernetes pod shutdown lifecycle

Thu, 30 Jul 2020 00:00:00 +0000

I always forget the details about Kubernetes pod shutdown lifecycle when I need them, so this is my now made public notes on the subject.

Show me your code: how buildkit can help integrating GoReleaser with multi-arch Docker manifests

Tue, 28 Apr 2020 00:00:00 +0000

A discussion with Tibor and Geanluca about Docker buildkit and GoReleaser.

Publishing libraries with GoReleaser

Sun, 26 Apr 2020 00:00:00 +0000

What if I told you you can now automate the release of your libraries as well?

Leader Election inside Kubernetes

Sat, 14 Mar 2020 00:00:00 +0000

Ever needed a simple leader election mechanism on something that will run on a Kubernetes cluster? There’s an easy way to do that!

Kubernetes Jobs: shut down sidecar when main container finishes

Fri, 28 Feb 2020 00:00:00 +0000

Kubernetes Pod lifecycle does not cover everything just yet.

Easy private Helm repositories

Fri, 21 Feb 2020 00:00:00 +0000

Can we have a private Helm repository using GCS as backend? Yes we can!

4K display on MacOS: the saga

Wed, 05 Feb 2020 00:00:00 +0000

I recently got a 4K display, and it didn’t work as I expected on my MacBook Pro. This is what I tried, what worked and what didn’t.

GKE using Traefik as the ingress controller

Sun, 02 Feb 2020 00:00:00 +0000

I recently fell into a trap using Traefik as the ingress controller in one cluster. I decided to write about it with hopes it maybe help someone else.

/uses

Wed, 29 Jan 2020 00:00:00 +0000

Sometimes people ask me what my setup looks like for remote work. I decided to try and keep a more-or-less updated list of the hardware and software I’m using.

GoReleaser: 3 years later

Tue, 21 Jan 2020 00:00:00 +0000

GoReleaser’s journey begins in December 21, 2016: the day I made its very first commit. It has been a long road since then.

1º Open Source Joinville Meetup

Sun, 06 Oct 2019 00:00:00 +0000

Shared some tips about managing medium-sized OpenSource projects. The slides are in Portuguese.

High availability with nats-streaming-server (fault-tolerance)

Thu, 25 Jul 2019 00:00:00 +0000

I wanted to set up a fault tolerant nats-streaming-server, but couldn’t find a “quick” guide on how to do it - so here we are.

Faster Docker builds using go modules

Sun, 19 May 2019 00:00:00 +0000

Quick tip to improve the docker build speed using go modules.

High availability with nats-streaming-server (clustering)

Thu, 16 May 2019 00:00:00 +0000

I wanted to set up a high available nats-streaming-server cluster, but couldn’t find a “quick” guide on how to do it.

Git: check if a folder changed

Thu, 11 Apr 2019 00:00:00 +0000

Often I need to “do X only if files on some folder changed” or whatever. I always need to Google that or find it on old scripts…

GoReleaser Docker support

Fri, 11 Jan 2019 00:00:00 +0000

The next GoReleaser version will have a more flexible Docker configuration format. In this post we’ll explore it a bit.

Golang: cache things using interfaces

Mon, 17 Dec 2018 00:00:00 +0000

Caching things can be hard to do and hard to test. In this post I’ll demonstrate a convenient way of doing that using interfaces.

Monitoring GitHub releases with Prometheus

Sat, 15 Dec 2018 00:00:00 +0000

I have written some exporters to observe things on GitHub. This is how and why.

Using Goss to validate Packer builds

Thu, 06 Dec 2018 00:00:00 +0000

Ever wanted to validate your Packer image with Goss? Well, you can!

Keeping json files formatted

Mon, 12 Nov 2018 00:00:00 +0000

I’m working in a project that uses Chef, so it has a lot of JSON files.

GoReleaser: build and push Snapcraft packages from TravisCI

Sat, 20 Oct 2018 00:00:00 +0000

GoReleaser was able to build Snapcraft packages for a long time, but it wasn’t able to push them until today. Let’s see how to wrap to your TravisCI build!

Hacktoberfest Joinville

Sat, 20 Oct 2018 00:00:00 +0000

I shared some of my experiences coding GoReleaser, this time, more about community and less about Go itself. Slides are more or less the same, but here they are anyway:

Couchbase: rolling upgrade from 4.5.x to 5.1.x

Wed, 10 Oct 2018 00:00:00 +0000

I have an old Couchbase 4.5.x cluster, and I thought it would be nice to upgrade it. These are my notes and the tests I did before doing it “in production”™️.

GopherCon Brasil 2018: my review

Mon, 01 Oct 2018 00:00:00 +0000

A quick review of my second ever GopherCon - the first one as a speaker, and my experience talking.

Upgrading ElasticSearch 2 to 5: S3 snapshot/restore strategy

Thu, 02 Aug 2018 00:00:00 +0000

Migrating an ElasticSearch cluster from version 2 to 5 can be challenging, even more if it is a big cluster.

GoReleaser: lessons learned so far

Tue, 31 Jul 2018 00:00:00 +0000

I’ve started GoReleaser almost 2 years ago. This is a summary of (some) things I’ve learned down the road.

One month working remote

Fri, 08 Jun 2018 00:00:00 +0000

It has been one month since I started working fully remote, and I think I learned some things I can share.

Cleanup old GitHub Forks

Sat, 02 Jun 2018 00:00:00 +0000

I like to keep my GitHub clean. I delete forks I’m not using anymore, move old abandoned repositories to my graveyard and etc.

Prometheus authentication with oauth2_proxy

Mon, 28 May 2018 00:00:00 +0000

I wanted to set up a prometheus machine for me to monitor random stuff, but I was always postponing that because I didn’t want to use SSH port-forwarding, firewalls, create a VPC and/or setup an OpenVPN server or anything like that.

I'm Joining TOTVS Labs

Tue, 17 Apr 2018 00:00:00 +0000

Everything in life eventually comes to an end, including life itself. This is not that kind of post, though.

GoReleaser: 1k repositories and beyond

Mon, 09 Apr 2018 00:00:00 +0000

When I first announced GoReleaser roughly 1 year ago, on January 2017, I never thought it would be somewhat famous.

On being an effective developer

Sat, 07 Apr 2018 00:00:00 +0000

Over the years I read several articles on how to be effective, and how the 10x engineer thing is or is not a lie and all that.

Moving to Hugo

Mon, 19 Mar 2018 00:00:00 +0000

After some time, I finally decided to move my blog from Jekyll to Hugo.

2º Joinville Go Meetup

Tue, 27 Feb 2018 00:00:00 +0000

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

Creating debs and rpms with Go

Fri, 23 Feb 2018 00:00:00 +0000

I’ve been working on GoReleaser for more than a year now, and one of the things that was bothering me the most was fpm.

1º Joinville SRE Meetup

Sat, 25 Nov 2017 00:00:00 +0000

I spoke about how we migrate our monitoring infrastructure to Prometheus & Friends, what we got out of it and how it is working for us right now.

1º Changelog Meetup

Tue, 21 Nov 2017 00:00:00 +0000

I showed how to build and release binaries in Go, including cross-compiling, Docker images, Linux packages and Homebrew, featuring GoReleaser on the end.

A Repository Graveyard

Mon, 04 Sep 2017 00:00:00 +0000

This past weekend I decided I need to clean up my GitHub profile. In this post I’ll write about why I cleaned everything up and also how I did, as well as some initial results.

Charting Repository Stars

Tue, 08 Aug 2017 00:00:00 +0000

I always wanted to know how stargazers of my repos increased over time.

GKE in production

Sun, 02 Jul 2017 00:00:00 +0000

I’ve been working with DigitalOcean, Heroku and AWS for some years now.

Improving Jekyll build time

Sun, 14 May 2017 00:00:00 +0000

I’ve been using Jekyll on my blog since 2012. It is great! But, lately, its slow build times started to bother me.

70% cheaper Kubernetes cluster on AWS

Fri, 28 Apr 2017 00:00:00 +0000

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

Thu, 13 Apr 2017 00:00:00 +0000

Last few months I’ve been using Go to write quite a lot of tools. In this post I intend 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

Mon, 20 Mar 2017 00:00:00 +0000

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

Sat, 11 Mar 2017 00:00:00 +0000

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.

Distributed Locking with Redis

Sat, 04 Mar 2017 00:00:00 +0000

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.

Fast and easy Go binaries delivery

Mon, 02 Jan 2017 00:00:00 +0000

I have some apps written in Go, which I deliver as binaries for each platform using GitHub releases. Until now, I was doing it with a very simple shell script.

Watchub

Thu, 06 Oct 2016 00:00:00 +0000

Watchub is a service that notifies you of people who followed/unfollowed you and starred/unstarred your repositories.

Fixing Alerts

Sun, 02 Oct 2016 00:00:00 +0000

As a DevOps/SRE, I spent a reasonable amount of time dealing with metrics and alerts.

How to make people love your product

Tue, 27 Sep 2016 00:00:00 +0000

I have seen a lot of posts like this subject, but almost all of them were about stuff you should do and almost none of them reflected how I truly feel, how I want a product to be so I can “love” it.

Dealing with Maven dependency hell

Sat, 03 Sep 2016 00:00:00 +0000

Every now and then an active java-based project enters a “dependency hell” state. That usually happens because people keep adding dependencies without checking what comes in transitively nor if that dependency is declared somewhere else already.

Setting up a Go build with Glide on CircleCI

Sun, 07 Aug 2016 00:00:00 +0000

I’ve lost a considerable amount of time trying to bind those things together, so I decided to write this quick post about it, so others could also benefit from it.

Speeding up my ZSH load time

Sun, 10 Apr 2016 00:00:00 +0000

This is the story on how I sped up my terminal load time.

Flag-oriented Programming

Wed, 10 Feb 2016 00:00:00 +0000

booleans, am I right? What a wonderful piece of technology! They help us solve so many problems…

What is good code?

Sun, 27 Dec 2015 00:00:00 +0000

I’ve been wanting to write this for a long time, just to clarify my thoughts on the subject. Now, on vacations, I took a couple of days and finally did it. This is a personal opinion based on my personal experience and tons of books I have read, and I am not, by any means, the supreme holder of the truth, so you will probably disagree with me at some point.

Continuous Delivery with GitHub, CircleCI, Docker and AWS Elastic Beanstalk

Tue, 29 Sep 2015 00:00:00 +0000

This is just a quick overview of how I did it in antibody’s homepage.

2º #connect(dev)

Thu, 24 Sep 2015 00:00:00 +0000

I gave a little intro on Docker and talked about when to use it or not.

Parse environment variables to structs in Go

Thu, 30 Jul 2015 00:00:00 +0000

In Go, it’s dead simple to get the value from an environment variable:

Small Go Apps Containers

Thu, 09 Jul 2015 00:00:00 +0000

Or: how to ship your app in a <20Mb container.

Avoid static imports

Sun, 05 Jul 2015 00:00:00 +0000

There are a lot of Java API’s and Frameworks which rely on static methods and the sort. Arguably, this is a bad OOP practice, but let’s not enter this particular subject just yet.

Cross-compiling Go

Mon, 29 Jun 2015 00:00:00 +0000

go build generates a binary for the platform you run it in. So, if I build antibody in a Linux machine - which uses Mach-O, it will not work in OS X - which uses ELF.

I wrote Antigen in Go: Antibody

Sat, 06 Jun 2015 00:00:00 +0000

Learning Go was in my TODO list for a while, and finally I did something about it. This post contains some thoughts about it…

Running a Selenium Grid with docker-compose

Fri, 15 May 2015 00:00:00 +0000

At ContaAzul, we had 31 Windows machines powering our Selenium tests - one running the grid and 30 more running clients. Needless to say, this is very expensive.

Docker: The very basics

Tue, 12 May 2015 00:00:00 +0000

Or “what the hell is this Docker thing?”

Docker Protips™

Sun, 10 May 2015 00:00:00 +0000

Like my old post on git, this is somewhat a collection of useful Docker commands/tricks/whatever.

QCon Sao Paulo - 2015: A short overview

Sat, 28 Mar 2015 00:00:00 +0000

So, this week I attended QCon-SP.

Using Mockito's InjectMocks

Thu, 05 Mar 2015 00:00:00 +0000

FYI: Like the previous post, this is a really quick tip.

Introducing JVM - The Java Version Manager

Sun, 22 Feb 2015 00:00:00 +0000

In recent years it has become more and more common to work in different projects running on different versions of Java. There are still some running on Java 6, and there are tons already running on Java 8.

Dump a PostgreSQL table as insert statements

Thu, 19 Feb 2015 00:00:00 +0000

FYI: Like the previous post, this is a really quick tip.

Find non-ASCII chars

Tue, 17 Feb 2015 00:00:00 +0000

FYI: This is a really quick tip.

Integrating Minitest with Shippable

Wed, 04 Feb 2015 00:00:00 +0000

I know, everyone uses Travis. I have nothing against it. But in case you want to test and/or use Shippable, this might be just the guide for you. I will also show how to setup those nice tabs with the test and coverage reports.

How to write a good tech job description

Mon, 02 Feb 2015 00:00:00 +0000

Recently I saw a job description of a Brazilian company, more or less like this:

Jekyll: Reading time without plugins

Mon, 19 Jan 2015 00:00:00 +0000

Estimated reading time of a post is a feature that became popular, I believe, with Medium.

OpenSourcing my blog again

Sun, 18 Jan 2015 00:00:00 +0000

Once upon a time, my blog was OpenSource. People liked it and forked it tons of times, but they never changed some stuff (disqus, analytics).

Jekyll with Sass

Fri, 09 Jan 2015 00:00:00 +0000

I followed @mdo’s recent article “Using Sass with Jekyll”, and wanted to point out the results.

Lint your shell scripts

Mon, 15 Dec 2014 00:00:00 +0000

I will start this by quoting the bashstyle’s readme:

Don't use junit.framework

Sun, 14 Dec 2014 00:00:00 +0000

Every once in a while I see somewhere a wrong import to the old, deprecated junit.framework instead of org.junit.

Using JUnit Rules to simplify your tests

Tue, 18 Nov 2014 00:00:00 +0000

Have you ever written JUnit tests extending a class that does some before and after work, so you didn’t have to repeat that code in various test classes?

Exponential Backoff with Java 8

Sun, 26 Oct 2014 00:00:00 +0000

Exponential backoff is an algorithm that uses feedback to multiplicatively decrease the rate of some process, in order to gradually find an acceptable rate. —- Wikipedia

Elections, in Ruby

Fri, 10 Oct 2014 00:00:00 +0000

Updated with second round script in Oct 26, 2014.

Install JDK on OSX Yosemite

Mon, 18 Aug 2014 00:00:00 +0000

For some reason, Oracle blocked the installers to run only on a fixed OSX version range with a nice and explanatory error message. This range doesn’t include Yosemite, which makes sense, since nobody running Yosemite will ever want to write some Java. Anyway, here is how to fix it.

Java 8

Mon, 04 Aug 2014 00:00:00 +0000

Earlier this year, the new version of the Java Programming Language was released. Finally, it enters the field of the “cool peeps” with some features it should have had since years ago, like Lambdas.

Find the slowest tests of a Java project

Mon, 28 Apr 2014 00:00:00 +0000

I found that it’s pretty hard to have a project with high test coverage and fast build… if the tests are slow, people will feel the need to skip them to speed up the build, and will probably write fewer tests than they should, afraid that the build will become even slower. You go out for a walk and when you come back no one is running or writing tests anymore…

PullRequest Coverage Blammer Maven Plugin

Tue, 18 Mar 2014 00:00:00 +0000

At the company I work Pull Requests are part of our culture.

2º Joinville Software Meetup

Thu, 06 Mar 2014 00:00:00 +0000

I encouraged people to start using git, showing some of its features.

This site is now powered by Turbolinks

Thu, 26 Dec 2013 00:00:00 +0000

I think that turbolinks is great: it makes it easy to add AJAX PushState to your Rails Applications. The only problem with that is that we can’t use it any WEB application, because it’s a Ruby Gem. So I did some ugly-but-easy hacks and add it to this very site. I will describe the steps below.

Fixing Rubygems Certificates

Thu, 28 Nov 2013 00:00:00 +0000

Today, once again, my environment started throwing that SSL cert error.

UP v2

Mon, 14 Oct 2013 00:00:00 +0000

So, this is the all-new UP version. It is more based on my own blog in some way, which is some kind of branch of the theme.

Twitter drops Ruby - The Bullshit

Thu, 19 Sep 2013 00:00:00 +0000

This post is about the Twitter change from Ruby to Java, some years ago, fact that, sadly, is still being used by some people to say that Ruby sucks and Java is the best language in the world.

Ruby: Nil

Mon, 09 Sep 2013 00:00:00 +0000

Following my previous posts with basic Javascript aspects, like context and variable hoisting, I’ll try to write some basic concepts of the Ruby language. I decided to start with something that usually confuses new Ruby users (sometimes they don’t even know that they are confused, by the way): the Ruby nil object.

Javascript Variable Hoisting

Wed, 04 Sep 2013 00:00:00 +0000

This article is the second of a series of n articles, where n could be any given number between 1 and 2 (inclusive).

Javascript Context

Mon, 12 Aug 2013 00:00:00 +0000

People have a lot of confusion about Javascript context mechanism. I don’t think it’s confusing at all, it’s just that it’s different when compared with other languages we generally use.

JPA2 with Guice

Wed, 26 Jun 2013 00:00:00 +0000

Some time ago, I posted here about a simple project that I’ve done in my post-graduation classes. Since I need it in other projects, and also some friends ended up using it in small projects, I decided to evolve it a little bit.

Riding a MS Network with Linux

Mon, 03 Jun 2013 00:00:00 +0000

I work in a company that has an entirely MS-based network, which means, all that domain login crap and everything that comes with it: outlook, MS Communicator, proxies, monitoring and etc.

Git Protips™

Fri, 08 Feb 2013 00:00:00 +0000

Git has a lot of features, and I bet that 90% of who use it (including me) doesn’t know half of them. Well, maybe, someday, one of those “unknown features” can “save your life”.

Gemify your assets

Tue, 05 Feb 2013 00:00:00 +0000

Rails 3.1 introduced the asset pipeline, which makes it easy to include versioned external assets as application dependencies.

Turbolinks animated page transitions

Tue, 22 Jan 2013 00:00:00 +0000

Since I’ve seen the new Basecamp, I fell in love with it.

Unobtrusive JS

Sun, 13 Jan 2013 00:00:00 +0000

Seven Languages in Seven Weeks: Erlang

Tue, 18 Dec 2012 00:00:00 +0000

So, I just bought “Seven Languages in Seven Weeks”. I’ve read the Ruby chapter, not a big deal at all, so I skipped it. I also skip Io, Prolog and Scala (for now), and then, fall in Erlang!

UP: A Jekyll theme

Sun, 16 Dec 2012 00:00:00 +0000

After a while using Jekyll Bootstrap, I just realized that it was so much bloated. Then, few days ago, I forked the old Zach Holman’s blog, and started to tweak my own theme based on theirs (that now is opensource). At first, I like it, but after a while, I just start thinking that it had a “old style” design.

Things that make me dislike Java

Sat, 15 Dec 2012 00:00:00 +0000

So, I just compiled a little list of things that, I believe, make me dislike Java everyday a little more.

Rails AJAXSpin

Mon, 26 Nov 2012 00:00:00 +0000

A couple of days ago I wrote about how to build a simple and non intrusive AJAX status with CoffeeScript in RubyOnRails.

Dotfiles Are Meant to Be Forked

Fri, 23 Nov 2012 00:00:00 +0000

My desktop

Simple RoR AJAX Status

Thu, 08 Nov 2012 00:00:00 +0000

tl;dr

Configuring a git server with gitolite

Wed, 03 Oct 2012 00:00:00 +0000

Setup

GWT Bootstrap 2.0.4.0 released

Tue, 14 Aug 2012 00:00:00 +0000

For those who don’t know, GWT-Bootstrap wants to port the Twitter Bootstrap widgets to GWT compatible and easy to use components/widgets.

Quick intro to Google Guava

Wed, 08 Aug 2012 00:00:00 +0000

According to the project site on GitHub, The Guava project contains several of Google’s core libraries that we rely on in our Java-based projects: collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth.

Guice Junit test-runner

Tue, 07 Aug 2012 00:00:00 +0000

Yesterday, I wrote a small article talking about Guice and JUnit, so, this time, I’ll just say how to use the small lib that I build (not big deal, one class, one annotation =] )

Guice and JUnit

Mon, 06 Aug 2012 00:00:00 +0000

First of all: Do you use Guice as Dependency Injection Container in your Apps? If not, why?

Theming GWT-Bootstrap

Wed, 27 Jun 2012 00:00:00 +0000

First of all, if you haven’t done it yet, read Getting started with GWT-Bootstrap.

Getting started with GWT-Bootstrap

Tue, 26 Jun 2012 00:00:00 +0000

GWT-Bootstrap is a project that aims to provide all the Twitter Bootstrap styles and widgets to GWT applications.

Modular Persistence

Mon, 25 Jun 2012 00:00:00 +0000

Hi everybody!

Hello World

Sun, 24 Jun 2012 00:00:00 +0000

Hello everyone :)

Contribute

Mon, 01 Jan 0001 00:00:00 +0000

My long-term goal is to become a full-time open-sourcerer.

If you like my work, consider donating, gifting a book or buying my apps.

Thanks a ton 💙

Buy my apps

GoReleaser Pro

Donations

GitHub Sponsors
PayPal
Bitcoin (BTC): bc1qpqpfxqs20ntktmfmaqf4290tc84cdmdaedwd06

Nominate me as a GitHub Star

This costs you nothing, and will still be greatly appreciated! 🫶

You can nominate me here. My GitHub handle is @caarlos0.

Gift

I’m always reading something, and there’s always something in my Amazon Wishlist.

Hey, I'm Carlos!

Mon, 01 Jan 0001 00:00:00 +0000

I create, maintain, and operate software.

I currently work at GitHub and maintain GoReleaser. I also have my own silly little software company.

When not working, I may just be out there being a dad, reading books, getting beat up at Jiu-Jitsu¹, lifting (rather heavy) weights², or just generally touching grass.

I’m interested in programming languages, Zeichenorientierte Benutzerschnittstellen³, containers, distributed systems, security, and monitoring. Feel free to ping me somewhere if you want to chat about any of that. 🙂

Stars ✨

Mon, 01 Jan 0001 00:00:00 +0000

More-or-less updated list of stars on some repositories I work on:

goreleaser

Repository	Stars
goreleaser/goreleaser	15925
goreleaser/nfpm	2591
goreleaser/goreleaser-action	1017
goreleaser/chglog	284
goreleaser/goreleaser-cross	191
goreleaser/example-zig-cgo	129
goreleaser/goreleaser-pro	71
goreleaser/fileglob	70
goreleaser/example-supply-chain	60
(41 other repositories with <50 stars)	229
-	20567

caarlos0

Repository	Stars
caarlos0/env	6259
caarlos0/starcharts	1423
caarlos0/svu	847
caarlos0/dotfiles	216
caarlos0/log	64
caarlos0/pinata	63
(22 other repositories with <50 stars)	204
-	9076

caarlos0-graveyard

Repository	Stars
(2 other repositories with <50 stars)	0
-	0

Archived

Repository	Stars
caarlos0/dotfiles.zsh	701
caarlos0/timer	640
caarlos0-graveyard/nprogress-rails	511
caarlos0/tasktimer	456
goreleaser/godownloader	449
caarlos0/fork-cleaner	372
caarlos0/domain_exporter	347
caarlos0/dotfiles.fish	309
caarlos0/org-stats	245
caarlos0-graveyard/up	141
caarlos0/jsonfmt	114
caarlos0/twitter-cleaner	97
caarlos0-graveyard/jvm	82
caarlos0/clone-org	80
caarlos0-graveyard/spin	70
caarlos0-graveyard/macOS	70
caarlos0/mdtree	69
caarlos0-graveyard/zsh-open-pr	64
caarlos0/parttysh	58
caarlos0/httperr	55
caarlos0-graveyard/watchub	55
caarlos0/speedtest-exporter	54
(188 other repositories with <50 stars)	1429
-	6468

Total: 36111 stars in 290 repositories