Alex Rios
@alexrios.me
Former Carioca 🏖 living in Curitiba 🏔 ⛩️ Supreme Leader ⛩️ Author of System Programming Essentials with Go & Learning Zig. Posts about Tech Leadership, Go and Zig. He/Him
Five ways to leak a goroutine.
Not theory. Real bugs from CockroachDB, Kubernetes, etcd, and gRPC that shipped to production.
Part 3 of my series on Go's new leak detector.
alexrios.me/blog/gorouti...
Not theory. Real bugs from CockroachDB, Kubernetes, etcd, and gRPC that shipped to production.
Part 3 of my series on Go's new leak detector.
alexrios.me/blog/gorouti...
December 29, 2025 at 12:51 PM
Five ways to leak a goroutine.
Not theory. Real bugs from CockroachDB, Kubernetes, etcd, and gRPC that shipped to production.
Part 3 of my series on Go's new leak detector.
alexrios.me/blog/gorouti...
Not theory. Real bugs from CockroachDB, Kubernetes, etcd, and gRPC that shipped to production.
Part 3 of my series on Go's new leak detector.
alexrios.me/blog/gorouti...
Clicked "Update" on Pop!_OS, went to feed the cats, came back to kernel panic's chatty cousin.
Turns out kernel 6.17.4 + NVIDIA drivers = CPUs stuck in an infinite roundabout.
Lesson learned: know your chroot recovery workflow before you need it.
Post with the fix 👇
alexrios.me/blog/pop-os-...
Turns out kernel 6.17.4 + NVIDIA drivers = CPUs stuck in an infinite roundabout.
Lesson learned: know your chroot recovery workflow before you need it.
Post with the fix 👇
alexrios.me/blog/pop-os-...
How a routine Pop!_OS update turned my Monday into a kernel debugging session
Why you should always have a recovery plan before clicking "Update"
alexrios.me
December 22, 2025 at 6:45 PM
Clicked "Update" on Pop!_OS, went to feed the cats, came back to kernel panic's chatty cousin.
Turns out kernel 6.17.4 + NVIDIA drivers = CPUs stuck in an infinite roundabout.
Lesson learned: know your chroot recovery workflow before you need it.
Post with the fix 👇
alexrios.me/blog/pop-os-...
Turns out kernel 6.17.4 + NVIDIA drivers = CPUs stuck in an infinite roundabout.
Lesson learned: know your chroot recovery workflow before you need it.
Post with the fix 👇
alexrios.me/blog/pop-os-...
Got feedback: my goroutine-leak series was too dense. Fair.
So I wrote Part 0: A gentler intro.
Core idea: spawn a goroutine, you become a parent. Leave before your child can finish? You've abandoned them. Forever.
That's a goroutine leak. And Go has no goroutine GC.
alexrios.me/blog/gorouti...
So I wrote Part 0: A gentler intro.
Core idea: spawn a goroutine, you become a parent. Leave before your child can finish? You've abandoned them. Forever.
That's a goroutine leak. And Go has no goroutine GC.
alexrios.me/blog/gorouti...
December 19, 2025 at 11:12 PM
Got feedback: my goroutine-leak series was too dense. Fair.
So I wrote Part 0: A gentler intro.
Core idea: spawn a goroutine, you become a parent. Leave before your child can finish? You've abandoned them. Forever.
That's a goroutine leak. And Go has no goroutine GC.
alexrios.me/blog/gorouti...
So I wrote Part 0: A gentler intro.
Core idea: spawn a goroutine, you become a parent. Leave before your child can finish? You've abandoned them. Forever.
That's a goroutine leak. And Go has no goroutine GC.
alexrios.me/blog/gorouti...
Standard profiling only gets you so far.
Part 2 of my Goroutine Leak Detection series is out, and this one hits hard. 🥊
I'm diving into the "GC Trick", using the runtime against itself to find the leaks that pprof misses.
Check it out: alexrios.me/blog/gorouti...
Part 2 of my Goroutine Leak Detection series is out, and this one hits hard. 🥊
I'm diving into the "GC Trick", using the runtime against itself to find the leaks that pprof misses.
Check it out: alexrios.me/blog/gorouti...
December 18, 2025 at 1:47 PM
Standard profiling only gets you so far.
Part 2 of my Goroutine Leak Detection series is out, and this one hits hard. 🥊
I'm diving into the "GC Trick", using the runtime against itself to find the leaks that pprof misses.
Check it out: alexrios.me/blog/gorouti...
Part 2 of my Goroutine Leak Detection series is out, and this one hits hard. 🥊
I'm diving into the "GC Trick", using the runtime against itself to find the leaks that pprof misses.
Check it out: alexrios.me/blog/gorouti...
🧵 Go 1.26 introduces an experimental goroutine leak detector.
I spent weeks diving into the implementation, research papers, and real-world bugs it catches.
Here's what I learned (Part 1/4):
alexrios.me/blog/gorouti...
#golang #go
I spent weeks diving into the implementation, research papers, and real-world bugs it catches.
Here's what I learned (Part 1/4):
alexrios.me/blog/gorouti...
#golang #go
December 17, 2025 at 8:24 PM
🧵 Go 1.26 introduces an experimental goroutine leak detector.
I spent weeks diving into the implementation, research papers, and real-world bugs it catches.
Here's what I learned (Part 1/4):
alexrios.me/blog/gorouti...
#golang #go
I spent weeks diving into the implementation, research papers, and real-world bugs it catches.
Here's what I learned (Part 1/4):
alexrios.me/blog/gorouti...
#golang #go
Anthropic -> Bun -> Zig 🦎 ⚡
December 3, 2025 at 12:34 AM
Anthropic -> Bun -> Zig 🦎 ⚡
Stop lying to yourself about those _ = functionCall() patterns in your Go tests.
The underscore isn't a design decision. It's a white flag.
New post: alexrios.me/blog/a-confe...
#golang #testing
The underscore isn't a design decision. It's a white flag.
New post: alexrios.me/blog/a-confe...
#golang #testing
November 19, 2025 at 4:04 PM
Stop lying to yourself about those _ = functionCall() patterns in your Go tests.
The underscore isn't a design decision. It's a white flag.
New post: alexrios.me/blog/a-confe...
#golang #testing
The underscore isn't a design decision. It's a white flag.
New post: alexrios.me/blog/a-confe...
#golang #testing
Há algum tempo, iniciei um projeto no GitBook sobre Go Modules em português.
Como acontece com muitos projetos de código aberto, ele ficou um pouco parado. Você sabe como é. A vida acontece.
Mas aqui está a boa notícia: Atualizei completamente o conteúdo até a versão 1.25 do Go 💚 .
Como acontece com muitos projetos de código aberto, ele ficou um pouco parado. Você sabe como é. A vida acontece.
Mas aqui está a boa notícia: Atualizei completamente o conteúdo até a versão 1.25 do Go 💚 .
November 9, 2025 at 4:33 PM
Há algum tempo, iniciei um projeto no GitBook sobre Go Modules em português.
Como acontece com muitos projetos de código aberto, ele ficou um pouco parado. Você sabe como é. A vida acontece.
Mas aqui está a boa notícia: Atualizei completamente o conteúdo até a versão 1.25 do Go 💚 .
Como acontece com muitos projetos de código aberto, ele ficou um pouco parado. Você sabe como é. A vida acontece.
Mas aqui está a boa notícia: Atualizei completamente o conteúdo até a versão 1.25 do Go 💚 .
Ok, lo sapete già che sarò speaker a @golab.io 2025 a Firenze. Ma la notizia bomba è questa: ho un regalo per voi! 🎁
Per festeggiare i 10 anni della conferenza, usate il codice SP20FR per avere il 20% di sconto sul biglietto!
Ci vediamo a ottobre!
Per festeggiare i 10 anni della conferenza, usate il codice SP20FR per avere il 20% di sconto sul biglietto!
Ci vediamo a ottobre!
August 25, 2025 at 12:18 AM
Ok, lo sapete già che sarò speaker a @golab.io 2025 a Firenze. Ma la notizia bomba è questa: ho un regalo per voi! 🎁
Per festeggiare i 10 anni della conferenza, usate il codice SP20FR per avere il 20% di sconto sul biglietto!
Ci vediamo a ottobre!
Per festeggiare i 10 anni della conferenza, usate il codice SP20FR per avere il 20% di sconto sul biglietto!
Ci vediamo a ottobre!
You know I'm speaking at GOLAB 2025 in Florence... but I bet you didn't know I have a 20% discount for you! 😉
To celebrate the conference's 10th anniversary, use code SP20FR at checkout. See you there!
To celebrate the conference's 10th anniversary, use code SP20FR at checkout. See you there!
August 25, 2025 at 12:17 AM
You know I'm speaking at GOLAB 2025 in Florence... but I bet you didn't know I have a 20% discount for you! 😉
To celebrate the conference's 10th anniversary, use code SP20FR at checkout. See you there!
To celebrate the conference's 10th anniversary, use code SP20FR at checkout. See you there!
Ok, vocês já sabem que vou palestrar na @golab.io
2025 em Florença. A novidade é: tenho um presente! 🎁
Para celebrar os 10 anos da conferência, usem meu cupom SP20FR e ganhem 20% de desconto no ingresso! Bora?
Nos vemos em outubro!
#Golab #Golang #Golab2025
2025 em Florença. A novidade é: tenho um presente! 🎁
Para celebrar os 10 anos da conferência, usem meu cupom SP20FR e ganhem 20% de desconto no ingresso! Bora?
Nos vemos em outubro!
#Golab #Golang #Golab2025
August 25, 2025 at 12:17 AM
Ok, vocês já sabem que vou palestrar na @golab.io
2025 em Florença. A novidade é: tenho um presente! 🎁
Para celebrar os 10 anos da conferência, usem meu cupom SP20FR e ganhem 20% de desconto no ingresso! Bora?
Nos vemos em outubro!
#Golab #Golang #Golab2025
2025 em Florença. A novidade é: tenho um presente! 🎁
Para celebrar os 10 anos da conferência, usem meu cupom SP20FR e ganhem 20% de desconto no ingresso! Bora?
Nos vemos em outubro!
#Golab #Golang #Golab2025
Here we Go!
Iteration in Go: simple for-range or something more?
Join Alex Rios for a deep dive into iterators, from basics to advanced patterns like pull-based loops and in-place mutation.
🔁 Tug-of-Code: The Battle for Efficient Iteration in Go
#golang #golab2025
Join Alex Rios for a deep dive into iterators, from basics to advanced patterns like pull-based loops and in-place mutation.
🔁 Tug-of-Code: The Battle for Efficient Iteration in Go
#golang #golab2025
August 25, 2025 at 12:02 AM
Here we Go!
Reposted by Alex Rios
🚨🚨🚨 ATENÇÃO 🚨🚨🚨
ESTÁ OFICIALMENTE LANÇADA A TERCEIRA EDIÇÃO DA MELHOR RINHA DE BACKEND DO MUNDO!
SÓ VEM E BRILHA!!!
RT e compartilha com seus amigos pra ajudar, por favor.
Link do repo abaixo 👇
ESTÁ OFICIALMENTE LANÇADA A TERCEIRA EDIÇÃO DA MELHOR RINHA DE BACKEND DO MUNDO!
SÓ VEM E BRILHA!!!
RT e compartilha com seus amigos pra ajudar, por favor.
Link do repo abaixo 👇
July 6, 2025 at 8:11 PM
🚨🚨🚨 ATENÇÃO 🚨🚨🚨
ESTÁ OFICIALMENTE LANÇADA A TERCEIRA EDIÇÃO DA MELHOR RINHA DE BACKEND DO MUNDO!
SÓ VEM E BRILHA!!!
RT e compartilha com seus amigos pra ajudar, por favor.
Link do repo abaixo 👇
ESTÁ OFICIALMENTE LANÇADA A TERCEIRA EDIÇÃO DA MELHOR RINHA DE BACKEND DO MUNDO!
SÓ VEM E BRILHA!!!
RT e compartilha com seus amigos pra ajudar, por favor.
Link do repo abaixo 👇
Ever wondered why your builds take forever? Or why are "clean builds" considered normal? I channeled my ataraxia to explore how Zig's build cache actually gets things right.
alexrios.me/blog/zig-bui...
alexrios.me/blog/zig-bui...
The build cache of Zig
A masterclass in not doing stupid things again and again...
alexrios.me
June 30, 2025 at 10:47 PM
Ever wondered why your builds take forever? Or why are "clean builds" considered normal? I channeled my ataraxia to explore how Zig's build cache actually gets things right.
alexrios.me/blog/zig-bui...
alexrios.me/blog/zig-bui...
Straight from the development trenches here in Curitiba, a new article just dropped on the blog!
This time, I'm taking a first look at the recent (and very welcome) addition of WaitGroup.Go() in Go 1.25 and how this small change represents a significant step forward for the language's ergonomics.
This time, I'm taking a first look at the recent (and very welcome) addition of WaitGroup.Go() in Go 1.25 and how this small change represents a significant step forward for the language's ergonomics.
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
June 18, 2025 at 4:41 PM
Straight from the development trenches here in Curitiba, a new article just dropped on the blog!
This time, I'm taking a first look at the recent (and very welcome) addition of WaitGroup.Go() in Go 1.25 and how this small change represents a significant step forward for the language's ergonomics.
This time, I'm taking a first look at the recent (and very welcome) addition of WaitGroup.Go() in Go 1.25 and how this small change represents a significant step forward for the language's ergonomics.
Hello!
Today at 7pm in the Golang SP community I'm going to present the talk that happened at GolangConf 2025 X 🇷🇺.
This talk will be presented in portuguese 🇧🇷
(link in the comments)
Today at 7pm in the Golang SP community I'm going to present the talk that happened at GolangConf 2025 X 🇷🇺.
This talk will be presented in portuguese 🇧🇷
(link in the comments)
June 16, 2025 at 3:23 PM
Hello!
Today at 7pm in the Golang SP community I'm going to present the talk that happened at GolangConf 2025 X 🇷🇺.
This talk will be presented in portuguese 🇧🇷
(link in the comments)
Today at 7pm in the Golang SP community I'm going to present the talk that happened at GolangConf 2025 X 🇷🇺.
This talk will be presented in portuguese 🇧🇷
(link in the comments)
Linux is my favorite rogue-like
May 20, 2025 at 5:23 PM
Linux is my favorite rogue-like
Qwen2.5-Max outperforms DeepSeek V3 🥵
February 1, 2025 at 5:39 PM
Qwen2.5-Max outperforms DeepSeek V3 🥵
Reposted by Alex Rios
Now that DeepSeek is having an impact on the US stock market, I expect a huge negative press cycle designed to discredit their advancement is on the way.
January 27, 2025 at 2:39 PM
Now that DeepSeek is having an impact on the US stock market, I expect a huge negative press cycle designed to discredit their advancement is on the way.
Infelizmente viciado em Marvel Rivals
January 2, 2025 at 9:30 PM
Infelizmente viciado em Marvel Rivals
Reposted by Alex Rios
