Why Your Code Breaks Every Time You Change It | SOLID Principles Explained (Hindi)

Kya aapke project mein bhi 1 chhota sa bug fix karne par 10 naye bugs paida ho jaate hain? Is video mein hum Software Engineering aur Low-Level Design (LLD) ke 5 SOLID Principles ko real-life examples aur practical Object-Oriented Programming (OOP) code ke saath step-by-step आसान Hindi/Hinglish mein samjhenge. Ek Junior Developer aur ek Senior Software Architect mein sabse bada farak clean, scalable, aur maintainable code design ka hota hai. Uncle Bob ke in 5 Golden Rules ko seekhne ke baad aapko naye features add karne ke liye apna purana code kabhi todna nahi padega! 📌 In This Video (Chapters): 0:00 – Why Your Code Breaks (Junior Dev vs Senior Architect) 0:41 – What Are the 5 SOLID Principles? 1:12 – 1. Single Responsibility Principle (SRP) – Restaurant & Invoice Class Example 2:49 – 2. Open/Closed Principle (OCP) – Smartphone App & Payment Processor (Credit Card, UPI, PayPal) 4:12 – 3. Liskov Substitution Principle (LSP) – Why Penguin Breaks the Bird Class 5:43 – 4. Interface Segregation Principle (ISP) – Human Worker vs Robot Worker Interface 6:52 – 5. Dependency Inversion Principle (DIP) – Plug Socket & Notification Service (Email, SMS, WhatsApp) 8:12 – Quick 1-Minute Recap of All 5 SOLID Principles 💡 Quick Recap of SOLID Design Principles: • S – Single Responsibility Principle (SRP): Ek class ka matlab sirf ek kaam (Invoice, InvoicePrinter, aur InvoiceRepository ko alag rakhna). • O – Open/Closed Principle (OCP): Naya feature jodne ke liye naya code likho (PaymentMethod interface), purane chalte hue code ko mat chhedo. • L – Liskov Substitution Principle (LSP): Child class aisi ho jo bina error diye Parent class ki jagah le sake (Bird vs FlyingBird). • I – Interface Segregation Principle (ISP): Ek bade interface ki jagah chhote aur specific interfaces banao (Workable, Eatable, Sleepable). • D – Dependency Inversion Principle (DIP): High-level aur low-level classes ko seedha mat jodo—beech mein MessageChannel jaise abstractions/interfaces ka use karo. 💬 Question for You: Agla video aapko kis System Design, LLD, ya Coding topic par chahiye? Comment karke zaroor batayein! Agar SOLID principles crystal clear ho gaye hon, toh video ko Like aur Share zaroor karein. Happy Coding! 🚀 #SOLIDPrinciples #LowLevelDesign #SystemDesign #CleanCode #OOPs #SoftwareEngineering #CodingInHindi #ProgrammingInHindi #SoftwareArchitecture #LLD