MEDIUMInfrastructure

Design an API Gateway

Design an API gateway that handles authentication, rate limiting, routing, and request transformation for microservices.

Estimated Time: 45 minutes
#API Gateway#Rate Limiting#Authentication#Load Balancing
Solution Overview

Implement plugin-based architecture for extensibility. Use consistent hashing for rate limiting. Support multiple auth methods.

Hints to Get Started
1

Stateless vs stateful rate limiting

2

Service discovery integration

3

Circuit breaker pattern

Features
  • Request routing
  • Rate limiting
  • Authentication/Authorization
  • Request/Response transformation
  • Caching
  • Logging
Patterns
  • Backend for Frontend (BFF)
  • API Composition