$this->getResponse()->addCacheControlHttpHeader('private=True');
What's that for,how does it work?
views:
27answers:
2
+2
A:
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.1
private:
Indicates that all or part of the response message is intended for a single user and MUST NOT be cached by a shared cache. This allows an origin server to state that the specified parts of the response are intended for only one user and are not a valid response for requests by other users. A private (non-shared) cache MAY cache the response. Note: This usage of the word private only controls where the response may be cached, and cannot ensure the privacy of the message content.
Amber
2010-02-12 10:36:25
How can the browser identify different users?
2010-02-12 10:41:20
It can't. These headers are intended to provide info to proxy servers, which serve multiple users, as opposed to a browser which only serves one. (http://en.wikipedia.org/wiki/Proxy_server) Regular browsers simply ignore it since they don't care about multiple users.
Amber
2010-02-12 10:56:25
A:
It's related with the cache control directive.
By default, pages protected with HTTP authentication are considered private; they will not be kept by shared caches. However, you can make authenticated pages public with a Cache-Control: public header; HTTP 1.1-compliant caches will then allow them to be cached.
Elzo Valugi
2010-02-12 10:39:28