- Sep 10, 2026 7 min read
Ship the code, reveal the feature later: what feature flags really do
The scariest part of shipping is that deploy and launch happen at the same instant. Feature flags split them apart: the code goes to production switched off, and you turn it on later, for a few users first, and off again in a second if it breaks. Here is how they work and the debt they quietly build.
- Sep 08, 2026 12 min read
The 15-year-old checklist that still catches your deployment bugs
The Twelve-Factor App is a list of twelve habits for building software that runs the same everywhere. It was written in 2011 and still explains most of why an app breaks in production. Here is the whole thing in plain terms, grouped so it sticks, plus the four factors that show their age in 2026.