Good Module, Bad Module
01 Sep 2016You already know how to use modules in Ruby, but are you abusing them? In this post, we’ll take a look at different ways to program with modules and why they may or may not be a great idea.
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RubyGems Fracture Incident Report
This is a copy of the canonical report I published on RubyCentral’s site. I recommend reading there for the most updated copy. This document attempts to give closure to the Ruby community about the events that led to the incident, September 10-18, 2025, which I’ve named “RubyGems Fracture.”
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How to "Sustain Heroku"
This is a personal essay (I speak for me and my views, not for my employer) about what exactly a “Sustaining Engineering Model” is, in the context of the recent Heroku announcement, and the book “The Innovator’s Dilemma,” as seen by someone who has worked at the company for the past 14 years.
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Non-Violent Comments: Calling out or Calling in?
Now that programmers are at war with the robots (Gen AI) for our jobs, we need to lean into the things that they cannot do. Today, I’m going to be talking about how to be a human and communicate with other humans in the most hostile of scenarios, “in conflict (drama).”
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Disallow code usage with a custom `clippy.toml`
I recently discovered that adding a
clippy.tomlfile to the root of a Rust project gives the ability to disallow a method or a type when runningcargo clippy. This has been really useful. I want to share two quick ways that I’ve used it: Enhancingstd::fscalls viafs_errand protecting CWD threadsafety in tests. -
Upgrade to Puma 7 and Unlock the Power of Fair Scheduled Keep-alive
Puma 7 is here, and that means your Ruby app is now keep-alive ready. This bug, which existed in Puma for years, caused one out of every 10 requests to take 10x longer by unfairly “cutting in line.” In this post, I’ll cover how web servers work, what caused this bad behavior in Puma, and how it was fixed in Puma 7; specifically an architectural change recommended by MSP-Greg that was needed to address the issue.