A variant, the proxy-revalidate directive, requires public caches to validate.

proxy - revalidate指令是一个变体，它要求对公共缓存进行验证。

youdao

Proxy-revalidate -similar to must-revalidate, except that it only applies to proxy caches.

proxy - revalidate—和must - revalidate类似，除了他只对缓存代理服务器起作用。

youdao

Proxy-revalidate -similar to must-revalidate, except that it only applies to proxy caches.

proxy - revalidate—和must - revalidate类似，除了他只对缓存代理服务器起作用。

youdao