Hi, I want to know how squid determine an HTTP request is cached or not, for example: an request(GET a.html) sent by browser 2 times with different cookie. for the 2nd time, will squid return the cached object create by 1st request? Different 'referer', 'user-agent' or anything else affect it ? Can I do something to make squid return the cached object or just forward to backend server? Is there any docment talking about this detail? Tks.