0 to 1,000,000 - How to Scale Systems Efficiently

📈 Scaling is about Queries per Second (QPS), not just user count!

🔑 Monolithic architecture works well for small scale systems (1-100 QPS).

🏘️ Modular and microservices architectures are crucial for medium scale (100-1,000 QPS) to handle growing user bases.

🛢️ Database optimization becomes essential at medium scale with read replicas and caching.

🌴 High-scale systems (1,000-100,000 QPS) rely on microservices, distributed databases, event-driven architectures, and advanced caching.