LLD Series: Open/Closed Principle (OCP) 🔌💻

The "O" in SOLID is the Open/Closed Principle. It’s the difference between a system that is "Fragile" and one that is "Pluggable." Stop modifying your tested classes and start extending them using Interfaces and Polymorphism.

**Key Takeaways:**

- Why `if-else` is often a design smell.
- How to use Interfaces for OCP.
- The USB Port Analogy.

**Full FAANG LLD Playlist:** https://www.youtube.com/playlist?list=PLxJaxAi_gp3WGE15E35dm2JwqCxBEIRyF

#OCP #SOLID #CleanCode #LLD #SoftwareDesign #CodingTips #SystemDesignInterview2026

Видео LLD Series: Open/Closed Principle (OCP) 🔌💻 канала Coding Simplified Space