This image shows a multi-tier topology consisting of a load balancer, a containerized application tier, and an autonomous database. All the resources in the topology are in a single availability domain and VCN in an Oracle Cloud Infrastructure region.
The load balancer is attached to a public subnet. An internet gateway allows traffic between the load balancer and users outside the cloud.
The application tier is in a private subnet. The application is composed of the following containerized microservices. The programming platform or language used to develop each microservice is indicated in parentheses.
- Ingress (Nginx)
- Router (Traefik)
- Media (Node.js)
- REST API (Node.js)
- Storefront (HTML 5)
- Tracking (Go)
- Session DB (Redis)
- Users (TypeScript)
- Orders (Java)
- Messaging (NATS)
- Payments (Go)
- Fulfillment (Micronaut)
- Carts (Helidon)
- Catalog (Go)
The autonomous database is in a private subnet.
A NAT gateway enables access from the private subnet of the application tier to the public internet.
A service gateway enables connectivity from the application tier to Oracle Cloud Infrastructure Object Storage.