> So what happens when one of the servers is offline? Say I stop the US server: > service nginx stop But that's not how you should test this. A client will se

> So what happens when one of the servers is offline? Say I stop the US server: > service nginx stop But that's not how you should test this. A client will see the connection being refused, and go on to the next IP. But in practice, a server may not respond at all, or accept the connection and then go silent. Now you're dependent on client timeouts, and round robin DNS will suddenly look a whole lot less attractive to increase reliability.