Sample Application Architecture

This task demonstrates the traffic control capabilities of Dubbo based on a simple online shopping mall microservice system.

The architecture diagram of the online mall is as follows:

The system consists of 5 microservice applications:

• Frontend Shopping Mall Home, which serves as the web interface interacting with users, calling User, Detail, Order, etc., to provide user login, product display, and order management services.
• User Service, responsible for user data management and identity verification.
• Order Service, providing order creation and query services, relying on the Detail service to validate product stock information.
• Detail Service, displaying detailed product information and calling the Comment service to show user comments on products.
• Comment Service, managing user comments on products.

Deploying the Mall System

For convenience, we will deploy the entire system on a Kubernetes cluster. Execute the following command to complete the mall project deployment. The source code example is in dubbo-samples/task.

kubectl apply -f https://raw.githubusercontent.com/apache/dubbo-samples/master/10-task/dubbo-samples-shop/deploy/All.yml

The complete deployment architecture diagram is as follows:

The Order Service has two versions, v1 and v2, with v2 being the newly released optimized version of the order service.

• Version v1 simply creates orders without displaying order details.
• Version v2 displays the delivery address details after the order is created successfully.

Both the Detail and Comment services also have two versions, v1 and v2, demonstrating the effect of traffic diversion across multiple versions.

• Version v1 provides services for all requests by default.
• Version v2 simulates services deployed in specific regions, so the v2 instances carry specific labels.

Execute the following commands to ensure all services and Pods are running normally:

$ kubectl get services -n dubbo-demo

$ kubectl get pods -n dubbo-demo

To ensure the integrity of the system, in addition to the several microservice applications related to the mall, examples also start up Nacos registration configuration center, Dubbo Admin Console, and Skywalking full-link tracing system in the background.

$ kubectl get services -n dubbo-system

$ kubectl get pods -n dubbo-system

Obtaining Access Address

Execute the following commands to map the cluster ports to local ports:

kubectl port-forward -n dubbo-demo deployment/shop-frontend 8080:8080

kubectl port-forward -n dubbo-system service/dubbo-admin 38080:38080

kubectl port-forward -n dubbo-system service/skywalking-oap-dashboard 8082:8082

At this point, open your browser to access the following addresses:

• Mall Home Page http://localhost:8080
• Dubbo Admin Console http://localhost:38080
• Skywalking Console http://localhost:8082

Task Items

Next, try to add some traffic control rules to the mall through the following task items.