The definitive technical reference for backend engineers and platform teams designing, configuring, and operating API gateways in distributed systems.
Covering Kong, Envoy, Tyk, NGINX Plus, AWS API Gateway — from fundamentals to production-scale patterns.
Modern distributed systems place the API gateway at the critical ingress boundary — the control point for north-south traffic, security policy enforcement, and backend contract abstraction. Getting gateway architecture right determines the operational ceiling of your platform: from startup-scale monoliths to multi-cluster, multi-region deployments serving millions of requests per second.
This reference covers the full spectrum: selecting the right gateway technology for your use case, designing resilient middleware pipelines, implementing authentication and rate-limiting at scale, mastering advanced routing patterns including multi-tenant isolation, API versioning strategies and deprecation lifecycles, and operating the whole layer in production through distributed tracing, SLOs, and structured logging.
Every topic includes production-ready configuration examples, trade-off analyses, and architectural decision frameworks validated against real-world deployments on Kong Gateway, Envoy Proxy, AWS API Gateway, NGINX Plus, and Tyk.
If you're new to the site, these pages answer the most common architecture questions and contain the deepest production-grade guidance.
Four structured sections take you from core gateway concepts through middleware chain design and advanced routing strategies to production observability and operations.
Core architectural patterns, deployment models, control-plane vs. data-plane separation, gateway selection criteria, security boundaries, high-availability topologies, and capacity planning.
Phase-based pipeline architecture, authentication proxying, JWT validation, rate limiting, Redis backends, CORS configuration, caching strategies, and request/response transformation.
L7 header inspection, regex-based path matching, JWT-claim and API-key routing, multi-tenant namespace isolation, cross-cluster traffic steering, and API version lifecycle management.
Distributed tracing and W3C trace-context propagation, the RED metrics method, SLOs and error budgets, structured access logging, and the operational discipline that keeps a gateway debuggable under load.