May 11
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Ever wondered how APIs actually work behind the scenes? In this video, we break down the fundamentals of HTTP and explore the most widely used API design approaches — REST, GraphQL, and gRPC. If you’ve heard these terms thrown around but never fully understood their differences or when to use what, this video is for you. We’ll start with how HTTP works (request–response, headers, status codes), and then build on top of that to understand how modern APIs are designed. What you’ll learn: - How HTTP requests and responses actually look - Status codes (2xx, 3xx, 4xx, 5xx) and what they mean - How REST APIs work and why they became the standard - The problems of overfetching & underfetching - How GraphQL solves these issues with flexible queries - What gRPC is and why it’s insanely fast - When to use REST vs GraphQL vs gRPC in real systems This is part of the System Design for Nerds playlist 👇 https://youtube.com/playlist?list=PL7YJlr96rCmM2TH-5dWV-fXSxY_fOUbag&si=bFrfPx8_N8wyVIec If you’re into system design, backend engineering, or just want to understand how real-world systems communicate — you’ll enjoy this series. 👍 Like the video if it helped 💬 Drop your questions or topics you want covered next 🔔 Subscribe for more deep dives into systems, networking, and engineering fundamentals Next video: Real-time communication (Polling, WebSockets, SSE, WebRTC) 👀 #qualcomm #http #api