Design patterns aren't a catalog — they're a way to predict where change will hurt
ruby
dev.to
Most design pattern content stops at "here's what a Factory is." That's fine for a quiz, but it doesn't help you when you're staring at a real codebase deciding how to structure the fifth integration you've onboarded this year. I spent a recent afternoon deliberately drilling on pattern recognition — not memorizing names, but learning to ask the right question before writing code. This post is the distilled version, applied to a problem a lot of backend engineers eventually hit: onboarding a ne