Microservices with gateway

Question

can you help me to understand the practicals of basic microservices setup ( with Order service and User service) with API gateway , authorization& authentication , basic rate limiting

Jayraj Chhaya · Answer

A basic microservices setup could have two services: Order Service and User Service , each running independently with its own database. Both are exposed through an API Gateway , which acts as a single entry point. User Service → handles user profiles, authentication data, and roles. Order Service → manages order creation, updates, and tracking. Both services are decoupled and communicate through REST APIs (or messaging like Kafka if needed). Authentication & Authorization : The gateway integrates with an identity provider (e.g., JWT tokens via OAuth2). Users log in once, and the gateway validates tokens before forwarding requests to services. Routing : Requests like /users/* go to the User Service, /orders/* go to the Order Service. Rate Limiting : The API Gateway enforces request limits (e.g., max 100 requests/minute per user) to protect services from overload. This design ensures security, scalability, and fault isolation . For example, if the Order Service is down, the User Service can still function independently. This is usually the first practical step before adding service discovery, monitoring (Prometheus/Grafana), and containerization (Docker/Kubernetes) for production readiness.

Microservices with gateway

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