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Microservices API Gateway
An API Gateway acts as a single entry point for all client requests to a microservices-based application. It routes requests to the appropriate downstream service, handles authentication and rate limiting, and can aggregate responses from multiple services.
Key Components
Load Balancer
Gateway Service
Service Discovery
Auth Service
Rate Limiter
Logging & Metrics
Design Challenge
Avoiding the gateway becoming a single point of failure or a performance bottleneck as services scale.