Microservices with gateway

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.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Jayraj Chhaya11mo ago
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.