Featured
These Data Centers Are Getting Really, Really Big – Data centers market is getting big, and this post help us understand how big it is. This race to get bigger datacenters to train AI will not end soon.
Summary of the Amazon DynamoDB Service Disruption in the Northern Virginia (US-EAST-1) Region – As you may know, AWS had several problems on US-East-1 this month and a large part of the internet went down with them. This kind of postmortem are always valuable.
The Pragmatic Engineer 2025 Survey: What’s in your tech stack? Part 3 – The third part of 2025 Pragmatic Engineer Survey was released, with great insights about developer’s tools usage across the industry.
Organize your Slack channels by “How Often”, not “What” – Large companies Slack are noisy, by organizing them following this rule, maybe you achieve better results and feel less exhausted.
Mistakes I see engineers making in their code reviews – Code reviews has always been a challenge, now with AI generated code, its even more harder. Every guide with some tips about it is useful.
MISC
Flight Recorder in Go 1.25 – As Go 1.25 is released, flight recorder is available to be used, it is a powerful tool to debug what is happening in your Go app. This guide walkthroughs the feature and provide a simple example about how to use it.
My First Contribution to Linux – Histories about first contributions to large open source projects are always inspiring, this one is very especial, because it deals with old hardware and Linux.
Why do LLMs freak out over the seahorse emoji? – Most LLMs say that a seahorse emoji exists and freak out over it. This amazing article debugs LLMs to understand why it happens.
It’s insulting to read your AI-generated blog post – The title says all.
Free software scares normal people – For most of tasks there’s a open source software that does it in the best way possible, but why normal people still not using it? The reason probably is UX.
Avoid Negative Echo Chamber – One career advice, avoid negative echo chambers, positive is bad too, everything need a balance.
uv is the best thing to happen to the Python ecosystem in a decade – Package managers and Python has always been a problem, uv is shining as a possible definite solution to it.
Understanding Elixir’s Broadway – Elixir’s Broadway is one of the most fabulous libraries/toolkits out there, with a lot of built-in functions to deal with data processing, it’s set of tools out of the box, can deal with a lot of different challenges that most developers face nowadays.
Running 1:1s for Engineers – 1:1 are crucial to every team, and it is not a task reserved only to managers, but peer to peer is equal important too. This post give nice tricks and tips about how to make this meeting.
2025 Stack Overflow Developer Survey: A TL;DR for Leaders – A quick TL;DR of 2025 Stack Overflow Survey results.
Making your code base better will make your code coverage worse – Hard set a code base test coverage can make your code worse as it will lead to wrong decisions during development.
Environment variables are a legacy mess: Let’s dive deep into them – Environment variables are used by most developers nowadays, but do we know what is it?
The IDEs we had 30 years ago… and we lost – This kind of post always make me reflect on how much developer experience we used to have and don’t have today, or are just starting to have again. Some IDEs made in early 90s was awesome even today.
Embracing the parallel coding agent lifestyle – Parallel agents are the new trend on programming & AI space, this post bring some useful ways of use it.
Users Only Care About 20% of Your Application – “most users will only ever use about 20% of your application’s features, but each user uses a different 20%.”
Kafka is fast — I’ll use Postgres – The “just use Postgres” trend is fascinating and a people are made to do a lot of interesting stuff using only it. On this post we learn that is possible even to have a log-based queue.
O. Valadares' Blog 