Reference architecture for fail-open, witness-only evidence systems with independent verification and public settlement.

Distributed rate limiter with Redis + Token Bucket algorithm. Includes temporary ban system and threat detection. Production-ready with CI/CD.

SYSTEM-ARCHITECTURE-PROJECT-02 RateGuard : A horizontally scalable API Gateway demonstrating distributed systems concepts. Implements Token Bucket rate limiting via Atomic Redis Lua scripts, fail-open resiliency, and NGINX Docker DNS resolution.

Operational security controls with forensic guarantees