API Design Principles for Scalable Systems
API Design Principles for Scalable Systems Designing APIs for scalable systems means choosing predictable behavior that survives growth in users and data. A good API acts as a stable surface for apps, services, and partners. Start with clear contracts, keep requests stateless, and plan for failure. Consistency makes teams productive and users confident. Core principles Statelessness and idempotency Every request should carry all it needs to succeed. The server should not rely on past requests. Use idempotent operations where possible, and support idempotency keys for retries to avoid duplicates. ...