Api Gateway Patterns

This covers the production side of API gateways with a heavy Kong focus. You get routing patterns for microservices (path, header, method, host-based), rate limiting strategies from global to consumer-specific tiers, and traffic management like weighted routing for canary deployments. The architectural overview is solid on control plane vs data plane concepts and how Kong entities fit together. Use this when you're past the "what's an API gateway" phase and need to implement authentication flows, set up load balancing across service instances, or enforce quotas. The CQRS routing example for splitting reads and writes is nice. Most useful if you're actually deploying Kong or need to understand gateway patterns beyond basic reverse proxying.