Mar 8
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In this video, we break down Application Layer Protocols — the core communication languages of modern distributed systems. If you want to truly understand how applications like YouTube, Netflix, and Instagram work behind the scenes, you must understand: • HTTP & HTTPS • TLS Handshake • WebSockets for real-time communication • gRPC for microservices • DNS resolution process • How everything works together in milliseconds We connect networking fundamentals (TCP/IP, latency, bandwidth) to real-world system design architecture and show you what actually happens when you open a website. This video is part of the System Design Series, where we build concepts step-by-step from hardware to scalable distributed systems. Perfect for: Software engineers Backend developers System design interview preparation Distributed systems learners Computer science students Next up: APIs & Microservices Architecture. Subscribe to follow the complete roadmap to mastering System Design.