Thanks, Ben. I've added headers and now I can clearly see all of them: "X-Cache-Status: MISS" :-( Does it mean nginx cache is not properly configured or is it a matter of this specific backend? Why did you say "and never will be" with a "MISS" status? Thanks again ;-) Posted at Nginx Forum: http://forum.nginx.org/read.php?2,212954,213007#msg-213007