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Lessons (8)

• YAGNI: You Aren't Gonna Need It

  … 🩳 👕 🪥"] YAGNI = You Aren't Gonna Need It. It comes from Extreme Programming (XP): 📘 "Always implement things …

• SOLID at a Glance

  … Use them when code starts to hurt (see YAGNI ). - ❌ "SOLID is only for OOP." The ideas apply to …

• O — Open/Closed Principle

  … future change, and building extension points everywhere violates YAGNI . A good rule: 💡 Write the simple if first. When …

• What Is Clean Code?

  … Do one thing Rules of thumb KISS DRY YAGNI Errors Fail loudly No silent catch Structure Code smells …

• KISS: Keep It Simple, Stupid

  … With one, it's just noise. (See the lesson on YAGNI .) Example 3: Simplify conditions js // ❌ function getShippingCost …

• Clean Architecture

  … add ceremony without much benefit (remember KISS and YAGNI ). Clean Architecture pays off when the business logic is …

• Microkernel (Plugin) Architecture

  … A plug-in system nobody plugs into is YAGNI . Key takeaways - Microkernel = a small, stable core plus independent …

• Scaling, Load Balancing & Rate Limiting

  … step 7 on day one (remember KISS and YAGNI ). Each step solves a real, measured bottleneck. Load balancers …