问题
Given a URI which has headers for caching properly configured.
If two users make a request to the same URI but provide two different sets of credentials, will a proxy cache the response per user+URI, or per URI, or not at all?
回答1:
The response will only be used for other users if the Cache-Control response header contains the public directive. Apart from that, the proxy must not cache a response to an authorized request.
Read the section Authorization of the HTTP 1.1 standard for all the details.
来源：https://stackoverflow.com/questions/1177668/will-proxies-cache-http-responses-when-authentication-is-provided