Re:Introducing Cloud Spanner, a Global Database Service
by dragonwriter on Wednesday February 15, 2017 @01:05AM
(#13650084)
Since Spanner currently only supports single-region deployments, it clearly isn't recommended as protection against a region becoming unavailable.
It may be recommended as protection against an availability issue on an instance, though, which is, after all, a big reason why you'd want a distributed DB in production.
Re:Introducing Cloud Spanner, a Global Database Service
by edaemon on Wednesday February 15, 2017 @12:41PM
(#13653765)
I suppose the loss of a region doesn't apply (yet), but yes, the quorum requirement would still apply even if you only had instances in a single region.
It may be recommended as protection against an availability issue on an instance, though, which is, after all, a big reason why you'd want a distributed DB in production.