In the event of a primary data center outage, we would failover to a secondary data center. If you are using High Replication datastore, you should not experience any downtime while this happens. In addition, any data that are successfully committed will have been guaranteed to have been written.
Ikai Lan Developer Programs Engineer, Google App Engine Blog: http://googleappengine.blogspot.com Twitter: http://twitter.com/app_engine Reddit: http://www.reddit.com/r/appengine On Thu, Apr 21, 2011 at 11:17 AM, kowsik <[email protected]> wrote: > It's less about the data-center going down, but more about App design > and distributing it across regions. All the apps that relied on their > PaaS vendors that only provisioned in the us-east-1 region are all > hurting right now (including us). If only PaaS offerings enabled > regional affinity along with DNS fail-over to alternate regions, that > would be awesome. Does GAE do this? > > K. > --- > http://blitz.io (currently down) > http://twitter.com/pcapr > > On Thu, Apr 21, 2011 at 10:31 AM, Derrick Schneider > <[email protected]> wrote: > > Not easy, sure, though EC2 has plenty of support for different > availability > > zones (as does RDS) so it's not impossible (though you pay normal > bandwidth > > charges between availability zones, as opposed to getting it for free). > > So I guess it boils down to figuring out how much outages cost you. In > the > > case of these businesses, probably not enough to warrant investing the > time > > and skills to have plans and infrastructures for small-scale disasters > like > > this, given that they're relatively uncommon. > > Derrick > > On Thu, Apr 21, 2011 at 10:14 AM, Jeff Schnitzer <[email protected]> > > wrote: > >> > >> Easy to say, not so easy to do :-) > >> > >> All that frantic running-around-in-panic that GAE engineers and ops > >> people do when something goes wonky inside the datastore? That would > >> be you right now, trying to figure out how to failover your database > >> (and any other persistent data) to a different datacenter... and then > >> when the original comes back up you get to merge any lost > >> transactions. > >> > >> I've been there and I'm happy to leave this job to the professionals. > >> > >> Jeff > >> > >> On Thu, Apr 21, 2011 at 10:04 AM, Derrick Schneider > >> <[email protected]> wrote: > >> > While it's certainly unfortunate for companies that have bet on EC2, > >> > they'd > >> > be smarter to distribute their servers a bit so that a single data > >> > center > >> > outage does not take out their entire company. > >> > > >> > On Thu, Apr 21, 2011 at 10:02 AM, Jeff Schnitzer <[email protected] > > > >> > wrote: > >> >> > >> >> I'm not suggesting schadenfreude here, but for all those folks > >> >> doubting the viability of appengine for reliability reasons: > >> >> > >> >> > >> >> > >> >> > http://eu.techcrunch.com/2011/04/21/amazon-ec2-goes-down-taking-with-it-reddit-foursquare-and-quora/ > >> >> > >> >> Amazon's North Virginia datacenter tripped and fell over in the early > >> >> AM this morning, and several major sites (Foursquare and Quora) are > >> >> still down more than *eight hours* later. Ouch. > >> >> > >> >> You can read the gory details here: http://status.aws.amazon.com/ > >> >> > >> >> Jeff > >> >> > >> >> -- > >> >> 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. > >> >> > >> > > >> > > >> > > >> > -- > >> > Writer. Programmer. Puzzle Designer. > >> > http://www.obsessionwithfood.com > >> > > >> > -- > >> > 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. > >> > > >> > >> -- > >> 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. > >> > > > > > > > > -- > > Writer. Programmer. Puzzle Designer. > > http://www.obsessionwithfood.com > > > > -- > > 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. > > > > -- > 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. > > -- 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]. 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