k8s/istio -当特使不支持HTTP缓存时，服务之间的HTTP缓存的替代方案是什么？

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: my-service
spec:
  hosts:
    - my-service
  http:
    - route:
        - destination:
            host: my-service
      headers:
        request:
          set:
            Cache-Control: "max-age=3600"

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  nginx.conf: |
    proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:10m max_size=1g inactive=60m use_temp_path=off;
    server {
        listen 80;
        server_name my-service;
        location / {
            proxy_pass http://my-service;
            proxy_cache my_cache;
            proxy_cache_valid 200 302 10m;
            proxy_cache_valid 404 1m;
        }
    }

import redis

# 连接到Redis
r = redis.Redis(host='redis-service', port=6379, db=0)

def get_data(key):
    data = r.get(key)
    if data is not None:
        return data.decode('utf-8')
    else:
        # 从实际服务获取数据
        data = fetch_data_from_service(key)
        r.setex(key, 3600, data)  # 缓存1小时
        return data