API Gateways

The Phantom of the API Gateway

Routing, Rate Limiting, and the Opera of Ingress

Gaston Leroux · 28 July 2026

The chandelier fell shortly after someone disabled rate limiting for a partner integration.

Beneath the public façade of the application lurks a gateway with strong opinions about routing, quotas, headers, and identity. This volume offers a sober tour of ingress patterns, request transformation, circuit breaking, and the many tragedies caused by exposing an internal service because it had a pleasant voice.

Contents

  1. Box Five and the Public Endpoint
  2. The Masked Header of Identity
  3. Ariettas in Authentication and Authorisation
  4. When the Circuit Breaker Drops the Chandelier

Published by Austenpunk, the distinguished imprint for engineers who believe that every production incident would be improved by a stronger sense of narrative irony.

This essential volume combines literary feeling, technical anxiety, and just enough documentation to suggest that somebody once understood the system.

Cover of The Phantom of the API Gateway
× Cover of The Phantom of the API Gateway