diff --git a/templates/cartservice.yaml b/templates/cartservice.yaml
index 37e2532..a617eb9 100644
--- a/templates/cartservice.yaml
+++ b/templates/cartservice.yaml
@@ -47,7 +47,11 @@ spec:
             - containerPort: 7070
           env:
             - name: REDIS_ADDR
+{{- if .Values.redis.external.enabled }}
+              value: "{{ .Values.redis.external.address }}:{{ .Values.redis.external.port }}"
+{{- else }}
               value: redis-cart:6379
+{{- end }}
           livenessProbe:
             grpc:
               port: 7070
diff --git a/templates/redis-cart.yaml b/templates/redis-cart.yaml
index 8556368..a1d1d1b 100644
--- a/templates/redis-cart.yaml
+++ b/templates/redis-cart.yaml
@@ -1,3 +1,4 @@
+{{- if not .Values.redis.external.enabled }}
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
@@ -84,3 +85,4 @@ spec:
         - name: redis-data
           persistentVolumeClaim:
             claimName: redis-cart-data
+{{- end }}
diff --git a/values.yaml b/values.yaml
index 7b4643f..6cbd017 100644
--- a/values.yaml
+++ b/values.yaml
@@ -6,6 +6,10 @@ global:
 redis:
   image: redis:alpine
   storage: 1Gi
+  external:
+    enabled: false
+    address: ""
+    port: 6379
 
 loadgenerator:
   enabled: true