Hi John,
On 6 July 2012 05:33, johnP <[email protected]> wrote: > > Question: > > a. Am I correct in understanding that httpS://foo.com will always > resolve to one IP Address? > When you have a VIP it will often resolve to the one IP Address however at this point we do not guarantee the IP address will remain unchanged. As such we strongly recommend using the CNAME we provide. I would recommend using the naked domain redirection provide by Google Apps if you wish to use naked domains. > b. Does that mean that http://foo.com will also resolve to that same IP > Address? > Both HTTPS and HTTP will resolve to the same DNS record, in short yes. > c. Is it possible that customers may have IP_orig DNS cached, and the > cache has not updated recently (due to power outages on the East Coast, for > example), so httpS is trying to resolve to the old IP and failing? > Our infrastructure is designed so that traffic will be routed through the nearest possible data center to where your application is serving. Your application will fail over to a different data center if there are any issues with the data center you are currently serving out of. What this means is that the situation you are talking about should not happen if you are using the CNAME we provide nor should a power outage in one of our data centers cause your application to be unreachable. If you use an A record instead and the IP changes for some reason then this would be an issue, this is why we strongly recommend you do not use an A record. Cheers, Cayden Meyer Product Manager, Google App Engine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
