如何让两个后端nodejs服务器相互通信，在考虑k8s的情况下处理不同的任务

# backend1-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend1-deployment
spec:
  replicas: 2
  selector:
    matchLabels:
      app: backend1
  template:
    metadata:
      labels:
        app: backend1
    spec:
      containers:
        - name: backend1
          image: your-backend1-image
          ports:
            - containerPort: 3000

---

# backend2-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend2-deployment
spec:
  replicas: 2
  selector:
    matchLabels:
      app: backend2
  template:
    metadata:
      labels:
        app: backend2
    spec:
      containers:
        - name: backend2
          image: your-backend2-image
          ports:
            - containerPort: 3000

---

# backend-service.yaml
apiVersion: v1
kind: Service
metadata:
  name: backend-service
spec:
  selector:
    app: backend1
  ports:
    - protocol: TCP
      port: 80
      targetPort: 3000