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Posts by Alex Rios

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Migrated my zero-allocation UUID library to Zig 0.16.

alexrios.me/blog/migrati...

3 days ago 0 0 0 0
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When feedback stops working AI generates the artifacts. The feedback rituals continue. But nobody's learning anything.

open.substack.com/pub/alexrios...

5 days ago 0 0 0 0
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I'm fairly certain you've approved a PR without really reading it.

The junior got a green checkmark. Moved on. Never learned why the abstraction was wrong.

The feedback loop closed. Nothing traveled through it. And this goes way beyond code review.

5 days ago 0 0 1 0
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Quando software virou commodity Em fevereiro de 2026, um trilhão de dólares evaporou do mercado de software. Se qualquer um pode construir com IA, o software em si vale menos. Já vimos esse filme antes.

open.substack.com/pub/aquemint...

5 days ago 0 0 0 0
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Um trilhão de dólares evaporou do mercado de software em fevereiro. O mercado batizou de SaaSpocalypse.

A gente age como se fosse a primeira vez que uma indústria inteira descobre que virou commodity. Não é. Esse filme passa a cada duas ou três décadas.

5 days ago 0 0 1 0
LinkedIn This link will take you to a page that’s not on LinkedIn

I finally published my book about Postgres!

Check it out here: lnkd.in/eakHPn6E

Thanks @alexrios.me for the very good feedback, and @franckpachot.bsky.social for taking the time on reading the book and writing the foreword.

More details here:
www.linkedin.com/pulse/my-boo...

1 week ago 4 3 0 0
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Por que seus melhores engenheiros estão sumindo (e você pode ser o próximo) High performers entram em burnout primeiro porque são os que mais se importam. O sumiço silencioso é fácil de ignorar até que seja tarde demais.

open.substack.com/pub/alexrios...

1 week ago 0 0 0 0
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O silêncio do seu melhor engenheiro é muito mais perigoso do que as reclamações dele. 🧵

Se ele parou de questionar ideias ruins e agora só diz "o que o time decidir", ele não ficou "maduro". Ele está esmaecendo.

1 week ago 0 0 1 0
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Shipped a UUID library with all tests green.

Found silent data corruption hours later: bitCast on a negative timestamp produces a UUID from the year 10889. No panic, no error. Just wrong. #Zig

alexrios.me/blog/uuid-zi...

2 weeks ago 1 0 0 0
Let's talk about choosing a database in 2026 Thirteen years after Making Sense of NoSQL, most of its claims are debunked. PostgreSQL should be your default, with specialized databases added only when you have measured evidence.

Engineers still repeat NoSQL limitations from 2013 as if nothing changed. I went through every claim one by one. PostgreSQL addressed them all. The rest is engineering theater.

alexrios.me/blog/choosin...

2 weeks ago 0 0 0 0
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Finanças judaicas: história, não conspiração Em 1744, o homem que viria a ser sinônimo de finanças globais nasceu numa viela de três metros de largura, trancada por portões toda noite.

open.substack.com/pub/aquemint...

2 weeks ago 0 0 0 0
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Em 1744, o homem que viria a ser sinônimo de finanças globais nasceu numa viela de 3 metros de largura, trancada por portões toda noite.

Mil anos de história explicam como os judeus foram empurrados pras finanças. E por que culpá-los é exatamente o que o sistema precisa que você faça.

2 weeks ago 0 0 1 0

alexrios.me/blog/uuid-zi...

3 weeks ago 0 0 0 0
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GitHub - alexrios/uuid: RFC 9562 UUIDs in Zig. Zero allocations, all versions, doesn't panic on clock weirdness. RFC 9562 UUIDs in Zig. Zero allocations, all versions, doesn't panic on clock weirdness. - alexrios/uuid

Most UUID libraries pick 2-3 versions, skip the edge cases, and call it done. This one implements all 7 versions from RFC 9562 in a single Zig file. Zero heap allocations, and it actually handles the weird clock problems.

github.com/alexrios/uuid

3 weeks ago 1 0 0 1
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The architecture of decisions nobody made How defaults, copy-paste, and “temporary” choices become your real architecture

open.substack.com/pub/alexrios...

3 weeks ago 0 0 0 0

If you've ever tried to reverse-engineer intent from a 3-year-old Git commit and an archived Slack channel... this one is for you.

3 weeks ago 0 0 1 0

I put together some thoughts on the silent force that actually shapes our architecture, why "not deciding" is an invisible tax on engineering teams, and how to navigate the messy reality of decision archaeology without losing your mind.

3 weeks ago 0 0 1 0

They’re the "temporary" fixes, the inherited defaults, and the five-minute shortcuts that slowly compound into the reality every engineer has to deal with.

3 weeks ago 1 0 1 0
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We spend so much time arguing over RFCs and drawing perfect diagrams, but the truth is, the most consequential decisions in our codebases are often the ones that were never actually made.

3 weeks ago 0 0 1 0
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Ever poked around a system and found three completely different patterns doing the exact same thing? 😅
You ask your tech lead: "Who made this architectural decision?" The answer: Nobody. It just... happened.

3 weeks ago 0 0 1 0
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open.substack.com/pub/alexrios...

3 weeks ago 0 0 0 0
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Gophercamp 2026 | The Go Conference in Czech Republic Join us for Gophercamp 2026, the Go programming language conference in Czech Republic on April 24, 2026.

I’ll be speaking at #gophercamp in Brno (Apr 23–24, 2026).

I’ll cover in detail the brand new Garbage Collector: The Green Tea!

If you're into Go, this is a great place to be 💚 .

gophercamp.cz

3 weeks ago 0 0 0 0
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The substitution that isn't happening What the researches gets right about AI and labor, and what engineering teams already know

open.substack.com/pub/alexrios...

1 month ago 0 1 0 0

That gap between what AI feels like and what AI does is where most of the confusion about engineering hiring lives right now. New piece on why the substitution narrative is wrong, and what's actually worth worrying about.

1 month ago 1 0 2 0
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Developers in a controlled study thought AI made them 20% faster. They were actually 19% slower. The perception didn't change even after they saw the data.

1 month ago 0 0 1 0
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A máquina que fabrica radicais Como uma infraestrutura bilionária transformou frustração legítima em radicalização política, e por que a linha de montagem continua funcionando mesmo sem o operador.

open.substack.com/pub/aquemint...

1 month ago 0 0 0 0

A radicalização política americana não é um fenômeno cultural. É um produto industrial. Tem financiadores, linha de montagem e mercado de exportação.

1 month ago 0 0 1 0
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Em 2002, uma organização financiada pelos irmãos Koch registrou o domínio usteaparty.com. Sete anos depois, uma
"onda espontânea" de protestos varreria os Estados Unidos.

1 month ago 1 0 1 0
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A empresa que construiu um império no domínio público e depois trancou a porta Como a Disney transformou o copyright em arma de guerra

open.substack.com/pub/aquemint...

1 month ago 0 0 0 0

A ironia é que quase todo clássico da Disney veio de histórias que não eram dela. O que acontece quando uma empresa constrói um império no terreno comum e depois muda as regras do jogo?

1 month ago 0 0 1 0