📘 HTTP & HTTPS — Complete System Design Deep Dive (Beginner → Senior Engineer) In this video, I break down HTTP and HTTPS — one of the MOST important topics in system design, networking, backend engineering, and SDE interviews. If you are preparing for FAANG, Product-Based Companies, Backend Interviews, System Design Rounds, or want to master distributed systems, this video will help you understand everything from scratch. 🔍 What You’ll Learn (Full Deep Dive) ✅ What is HTTP? How does it work? Request–Response cycle HTTP methods Status codes Headers, body, cookies Stateless architecture ✅ What is HTTPS? TLS handshake Encryption, Authentication, Integrity SSL termination Certificates explained ✅ HTTP Internals (Advanced) TCP handshake Keep-alive HTTP/1.1 vs HTTP/2 vs HTTP/3 Connection pooling CORS Caching (ETag, Cache-Control, 304 Not Modified) ✅ Performance Concepts CDN Compression Minification API Gateway routing ✅ Real System Design Scenarios How FAANG uses HTTP Microservices communication API standards Security best practices ✅ Interview Preparation I explain ALL key interview questions for: SDE-1 / SDE-2 / SDE-3 Backend engineer System design rounds Distributed systems roles 🧠 Why This Video Is Important HTTP & HTTPS form the backbone of all backend systems. If you do not understand them deeply, you cannot build scalable systems. This video will take you from 0 → Senior Engineer understanding level. #systemdesign #backenddevelopment #http #https #networking #softwareengineering #interviewpreparation #sdeinterview #techinterview #loadbalancing #distributedSystems #cdns #apigateway #microservices #tcp #tls #scalablearchitecture