diff --git a/planpalto-helm/values-prod.yaml b/planpalto-helm/values-prod.yaml
index f6ce892..880773c 100644
--- a/planpalto-helm/values-prod.yaml
+++ b/planpalto-helm/values-prod.yaml
@@ -22,6 +22,27 @@ ingress:
   certArn: arn:aws:acm:ap-southeast-3:134604498185:certificate/79b1f257-0f66-4b32-96cb-5ea5c12792f6
   groupName: planpal-helm   # share the one public ALB with argocd + gitea
 
+# Prod backend sized to spread across nodes under load and scale wide.
+# 250m request => ~7 pods/node (1930m allocatable); max 12 => uses all 4 nodes.
+apps:
+  backend:
+    command: [planpal-server]
+    image: backend
+    envFrom: [backend-env, aws-env]
+    ports:
+      - { name: http, containerPort: 8088 }
+      - { name: metrics, containerPort: 9090 }
+    service:
+      port: 8088
+      targetPort: 8088
+    probePath: /api/v1/health
+    probePort: 8088
+    resources:
+      requests: { cpu: 250m, memory: 96Mi }
+      limits: { cpu: 500m, memory: 256Mi }
+    hpa: { min: 2, max: 12, cpu: 60 }
+    pdb: { maxUnavailable: 1 }
+
 seedJob:
   enabled: true