Question concerning upstream backup servers

[Igor Sysoev]

On Sun, Aug 09, 2009 at 08:19:31AM +0200, Victor Iggy wrote:

> How does nginx handle backup servers? For example..
> 
> upstream squids {
>     server 127.0.0.1:81; # squid 1
>     server 127.0.0.1:82; # squid 2
>     server 127.0.0.1:8001 backup; # nginx
>     server 127.0.0.1:8089 backup; # perlbal
> }
> 
> 
> if both squids fail, How will nginx balance? Will it round-robin both
> backups? or will it try the first backup and then move to the next one
> if the first backup failed?
> 
> Quite interested in this.

It will round-robin both backups.


-- 
Igor Sysoev
http://sysoev.ru/en/