Yugastore app is a sample ecommerce application built using a microservices design pattern. React UI, Node.js Express app framework and YugabyteDB (YCQL and YEDIS) are used as the underlying technology stack.

1. Create a cluster

Create a cluster.

$ kubectl apply -f yugabyte-statefulset.yaml

Initialize the YEDIS API.

$ kubectl exec -it yb-master-0 -- /home/yugabyte/bin/yb-admin --master_addresses yb-master-0.yb-masters.default.svc.cluster.local:7100,yb-master-1.yb-masters.default.svc.cluster.local:7100,yb-master-2.yb-masters.default.svc.cluster.local:7100 setup_redis_table

Clients can now connect to the YSQL, YCQL, and YEDIS APIs of the cluster at the following ports: 5433, 9042, and 6379, respectively.

2. Install Yugastore

$ kubectl run yugastore --image=yugabytedb/yugastore:latest --port=3001 --command -- /usr/local/yugastore/bin/start-for-kubernetes.sh

Verify the deployment.

$ kubectl get deployments

NAME        DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
yugastore   1         1         1            1           13m

Check all the pods.

$ kubectl get pods

NAME                        READY     STATUS    RESTARTS   AGE
yb-master-0                 1/1       Running   0          7h
yb-master-1                 1/1       Running   0          7h
yb-master-2                 1/1       Running   0          7h
yb-tserver-0                1/1       Running   0          7h
yb-tserver-1                1/1       Running   0          7h
yb-tserver-2                1/1       Running   0          7h
yugastore-55d7c6965-ql95t   1/1       Running   0          13m

Note the yugastore pod ID above so that you can redirect its 3001 port to the localhost's 3001.

$ kubectl port-forward yugastore-55d7c6965-ql95t 3001

Now you can see the Yugastore app at http://localhost:3001.

3. Run a load tester

You can do this as shown below.

$ kubectl exec -it yugastore-55d7c6965-ql95t -- node /usr/local/yugastore/test/sample-user.js

4. Observe effects of load on YugabyteDB Admin UI

Now you can observe the effects of the read/write operations generated by the load tester by simply going to the YugabyteDB Admin UI. First you have to find the Admin UI URL using the command below.

$ minikube service  yb-master-ui --url

http://192.168.99.100:31283

The above output is the Admin UI URL and visiting the Tablet Servers page there will show you the current state of the cluster.

5. Review Yugastore architecture and code

Details of Yugastore architecture are documented here. Source code is available in the Yugastore GitHub repo.

6. Run IoT Fleet Management app

After running Yugastore, Yugabyte recommends running the IoT Fleet Management app. This app is built on top of YugabyteDB as the database (using the YCQL API), Confluent Kafka as the message broker, KSQL or Apache Spark Streaming for real-time analytics and Spring Boot as the application framework.