Led the redesign of a monolithic API layer into a scalable gateway supporting 200+ downstream microservices.
Key Components
- Rate limiting — token bucket per client with Redis backend
- Auth delegation — JWT validation + RBAC at the edge, zero auth in downstream services
- Circuit breakers — per-service circuit breakers with configurable thresholds
- Request routing — path-based routing with canary and blue-green support
Results
Reduced inter-service auth overhead by 80%, improved p99 latency from 45ms to 15ms, and eliminated cascading failures during partial outages.