Chapter 3: Shopee Traffic Shield — Kafka Peak Shaving & Circuit Breaking in Go
Previous Chapter: Chapter 2 — Flash Sale Engine & Zero Overselling | Series Hub | Next Chapter: Chapter 4 — Database Scalability: From MySQL to TiDB Answer-first: Shopee defends its e-commerce infrastructure during mega shopping surges using a multi-layered traffic shield combining WAF rate limiting, virtual waiting rooms, and Apache Kafka asynchronous peak shaving. Decoupling order creation from relational persistence flattens extreme traffic spikes, preserving database stability while ensuring sub-fifty-millisecond checkout response times and zero message loss across millions of concurrent users. ...