HTTP
No cache header
For HTTP <= 1.0
Pragma: no-cache
For HTTP 1.0 proxy
Expires: 0
For HTTP >= 1.1
Cache-Control: no-store, must-revalidate
For HTTP <= 1.0
Pragma: no-cache
For HTTP 1.0 proxy
Expires: 0
For HTTP >= 1.1
Cache-Control: no-store, must-revalidate