Hi Nick, Thank you for the answer.
Best regards, Vitaly On 25 авг, 03:49, "Nick Johnson (Google)" <[email protected]> wrote: > Hi Vitaly, > > When a transaction commits, the data has been written to several disks in a > single datacenter. Thus, no one hardware failure can cause data to be lost. > Shortly thereafter, your data is replicated to other locations, providing > security against anything that affects a whole location. In theory, you > could lose data if something really drastic happened to a datacenter > immediately after a write but before replication - but this is extremely > unlikely! > > If you're worried about unnoticed dataloss, I can assure you this is not > possible - if data is lost, we would be fully aware of it, and taking steps > to recover it if possible. > > -Nick Johnson > > > > On Sun, Aug 22, 2010 at 10:08 AM, Vitaly <[email protected]> wrote: > > Hi, > > > Can I be sure that data in App Engine's datastore will not be lost > > after successful transaction commit? Is it possible that some recent > > changes to database will be lost if hardware failure occurs before > > replication to another datastore server is finished? > > > Thanks, > > Vitaly > > > -- > > 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]<google-appengine%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en. > > -- > Nick Johnson, Developer Programs Engineer, App Engine Google Ireland Ltd. :: > Registered in Dublin, Ireland, Registration Number: 368047 > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: > 368047 -- 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.
