I hve read a bunch of the answers here and most of them are dealing with round-robin DNS (RR DNS), but I have a different question. If at the DNS level I am resolving to say 3 IPs in a specific order, .1/.2/.3 will the browser use these addresses in order?
If there is an error on one of the IPs, 404, 503, 403, whatever, will the browser try the next IP in order, such that if server .1 throws a 503 error, will the browser then try .2? and .3 and so forth until it is able to reach a working system or run through all off the addresses?
The intention here is not to round robin the traffic or potentially spread load, I am contemplating that if I have an app go down, will the browser auto recover. Additionally, let's assume the first 2 entries are a local center and the 3rd is a less desirable choice, could I count in the order so I am not sending a user to a terrible latency decision, because I wanted it in the resolution as a final resort back up.