Gateway Gus saysAn API gateway is the single front door — routing, auth, rate limiting, and more in one layer.
Rather than exposing many services directly, you put a gateway in front. It routes requests to the right backend, and centralizes cross-cutting concerns: authentication, rate limiting, caching, logging, and request transformation. Clients see one consistent entry point; services stay simple. It's the traffic cop of a microservice architecture.
Power-ups you unlock
Single entry point for many services
Centralizes auth, rate limiting, caching, logging
Routes to the right backend
Keeps individual services simple
Timeout Titan attacks — common mistakes
Putting business logic in the gateway
A gateway that becomes a single point of failure
Duplicating auth in every service anyway
Boss battleList three cross-cutting concerns a gateway centralizes.