Fastcgi_cache Key Length Bug

[cromulus]

I figured it out. 

Here is the problem: if the fastcgi_cache_bypass directive is below the
fastcgi_cache_key directive, you encounter this particular problem.
Moving the fastcgi_cache_bypass directive above the fastcgi_cache_key
directive solved the problem and now urls of any length are process
correctly.

Sorry to bother you all!

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,188949,189146#msg-189146