Done that already. Actually using Zend OPcache + Memcached, it is better
than XCache.
fastcgi_cache would additionally boost speed for guest users, just looking
for correct config.
Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,245340,245343#msg-245343
Hi,
Did somebody manage to implement Nginx FastCGI cache for vBulletin 4?
I've read several similar links about it:
http://www.vbulletin.com/forum/forum/general/server-configuration/259952-nginx-the-raise-of-a-new-giant?p=3408500#post3408500
http://www.vbulletin.com/forum/blogs/ibxanders/3935822-