[PATCH]upstream server directive support variable

[Maxim Dounin]

Hello!

On Sun, Jun 02, 2013 at 08:46:33PM +0800, flygoast wrote:

> I've tried to dynamicly find upstream block name. However, now 
> my backend ips are stored in some storage like REDIS, or 
> memcache. In each request, I first to get the ips from the 
> storage, then proxy the request to the backend. Some backends 
> have not only one ip, so I used the usptream to process the 
> innormal situation like 502 in someone of them.  Main objective 
> is to retry another backend ip instead of load balance.  

To retry with another backend there is error_page directive.

-- 
Maxim Dounin
http://nginx.org/en/donation.html