architecture The Rule of Three: A Practical Heuristic for When to Actually Build That Abstraction josedacruz, August 3, 2026August 3, 2026 Every developer has felt this itch: you copy a chunk of code for the second time, and something in your brain screams “this is wrong, I should make this reusable.” So you stop, build a shared function or class, and wire everything to use it. Sometimes that’s a great move…. Continue Reading