--- name: system-design-mastery description: 'Design scalable distributed systems using structured approaches — load balancing, caching, message queues, databases, and microservices' version: 1.0.0 category: devops tags: [system-design, architecture,

### Decision Tree ``` Need a reverse proxy? ─┬─ HTTP routing + SSL ──→ Nginx (most common) ├─ API gateway + rate limiting ──→ Kong / Traefik ├─ TCP/UDP load balancing ──→ HAProxy