Why Nginx Doesn't Implement FastCGI Multiplexing?

[momyc]

It's my next task to implement connection multiplexing feature in Nginx's
FastCGI module. I haven't looked at recent sources yet and I am not familiar
with Nginx architecture so if you could give me some pointers on where I
could to start it would be great. Sure thing anything I produce would be
available for merging with main Nginx sources.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,237158,241054#msg-241054