17
Bad Caching: Jane’s 1st visit
GET /inbox?msg=3 HTTP/1.1
Host: webmail.example.com
Cookie: user=jane
HTTP/1.1 200 OK
Last-Modified: Thu, ...
Content-Type: text/html
GET /inbox?msg=3 HTTP/1.1
Host: webmail.example.com
Cookie: user=jane
Proxy
Proxy Cache
(Saves copy)
HTTP/1.1 200 OK
Last-Modified: Thu, ...
Content-Type: text/html
The URL isn't all that matters