Comprehensive Guide to API Gateways: Theory, Features, Selection, and a Custom Traefik‑Based Implementation
This article provides an in‑depth overview of API gateways, covering their core concepts, essential functions such as routing, load balancing, authentication, and monitoring, compares popular open‑source solutions like Nginx, Zuul, Kong and Traefik, and details a custom microservice gateway built on Traefik with Go and Etcd.