Cloud Architecture

Jun 26, 2026 · Information Security

OAuth 2.0 at Billion-Scale: Unified Auth Center Architecture & Pitfall Guide

This article details how to design a unified authentication center that can handle billions of OAuth 2.0 requests, covering layered architecture, token issuance and revocation, refresh‑token rotation, gateway validation, key management, and practical pitfalls to ensure secure, high‑performance identity traffic in production.