CDNs Explained in 6 Minutes | System Design Basics

Your server is in Virginia. Your user is in Tokyo. That's 11,000 kilometers of latency you can't code your way out of — but you CAN move the data closer. This video breaks down how Content Delivery Networks work: edge servers, cache hits vs misses, Cache-Control headers (public, private, max-age, no-store), and the trade-offs every developer should understand before deploying to production. What you'll learn: - What is CDN - What content belongs on a CDN (and what doesn't) - Cache-Control header - Content-hashed filenames for cache busting - Origin offloading and DDoS protection benefits - C…