hazelcast-reverse-proxy-sidecar

Hazelcast Reverse Proxy Sidecar Pattern

---

Build & Run

Skaffold

Execute Skaffold in dev mode

skaffold dev

Kubectl

1. Build Docker image and Push

docker build -t bitxon/app-hz-none:latest ./app
docker push bitxon/app-hz-none:latest
docker build -t bitxon/proxy-hz-embedded:latest ./proxy
docker push bitxon/proxy-hz-embedded:latest

2. Deploy to Kubernetes

# Apply hazelcast RBAC
kubectl apply -f k8s/hazelcast-rbac.yaml
# Expose hazelcast(5701) for discovery
kubectl apply -f k8s/hazelcast-service.yaml
# Create application deployment
kubectl apply -f k8s/app-deployment.yaml
# Expose application(8080)
kubectl apply -f k8s/app-service.yaml

3. Expose service port to local machine

kubectl port-forward service/application-service 8080:8080

Cleanup

kubectl delete -f k8s/app-service.yaml
kubectl delete -f k8s/app-deployment.yaml
kubectl delete -f k8s/hazelcast-service.yaml
kubectl delete -f k8s/hazelcast-rbac.yaml

---

Test your setup

# Put Value
curl --request PUT 'http://localhost:8080/cache/key1/valueA'
# Get Value
curl --request GET 'http://localhost:8080/cache/key1'
# Put Value to Locked cache (5 seconds long)
curl --request PUT 'http://localhost:8080/fenced-lock-cache/key1/valueB'
# Get Value from Locked cache (max wait 6 seconds)
curl --request GET 'http://localhost:8080/fenced-lock-cache/key1'
# Scale application
kubectl scale deployment application-deployment --replicas=5

---

Useful links

• Kubernetes Discovery
• Latest RBAC
• Example hazelcast.yaml
• How to use System Properties