API Gateway Design and Security
API Gateway Design and Security An API gateway sits at the edge of a system, guiding traffic, enforcing policy, and shaping security. It handles authentication, routing, rate limits, and observability. A well designed gateway reduces load on back-end services, improves reliability, and makes it easier to update security rules without touching every service. Design goals Centralized access control Consistent policy enforcement Fast, reliable traffic with low latency Clear observability and traceability Simple developer onboarding and policy changes A gateway should act as a single source of truth for how clients access APIs. It also helps teams rotate security controls without large rewrites, which saves time during incidents or audits. ...