Designing a 100M User Short Video System: TikTok-Scale Architecture Secrets

How to Design a Short Video Streaming System for 100 Million Users? Decoding High-Concurrency Architecture Through TikTok-Style Feeds Video Streaming Architecture Diagram I. Why Rethink Video Streaming Architecture? With modern users spending over 2 hours daily on short videos, a system serving 100 million users must handle: 100,000+ video requests per second Tens of thousands of interactions (likes/comments/shares) per second Petabyte-scale video data transmission simultaneously Traditional content delivery systems face three core challenges: Instant Response: Generate personalized recommendations within 500ms Seamless Experience: Zero latency during swipe transitions Dynamic Adaptation: Balance cold starts for new users with high-frequency access for active …