16-Rate-Limit-GatewayDistributed Multi-Algorithm Rate Limiting API Gateway

Atomic Redis Lua scripts, 5 interchangeable algorithms, sub-millisecond evaluation, and circuit-breaker in-memory fallback.

F1: Multi-Algorithm Engine

Supports Token Bucket, Leaky Bucket, Fixed Window, Sliding Window Log, and Sliding Window Counter.

Executes quota evaluations atomically inside Redis, eliminating distributed race conditions and double-bursts.

Prioritized client extraction from JWT claims, API keys, and CIDR subnet masking with dynamic route cost resolvers.

Runtime policy hot-reloading from YAML and JSON without requiring gateway process restarts.

React 19 admin dashboard displaying real-time quota consumption and worker health.

Capacity estimation and resilience modeling for 100,000 requests/second with sub-millisecond overhead.