proxy_next_upstream

[Abhishek Singh]

I am using nginx for mongrel cluster , and i want to use nginx
proxy_next_upstream feature , so in which directive  should i place
this , like in http , server or location .

 proxy_next_upstream error timeout http_500 http_503;

thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://nginx.org/pipermail/nginx/attachments/20070809/20dc212c/attachment.html>