News for hackers. Stuff that matters.

A comment on Introducing Cloud Spanner, a Global Database Service. Parent comment

Re:Introducing Cloud Spanner, a Global Database Service by zzzcpan on Tuesday February 14, 2017 @01:49PM (#13646008)
Except that A in CAP has nothing to do with overall system's availability over time and using it as such is just confusing.
[ Parent | on HN ]
Re:Introducing Cloud Spanner, a Global Database Service by sudhirj on Tuesday February 14, 2017 @02:08PM (#13646165)
But it makes sense in this case. The system guarantees CP. But as customer it looks like you're getting CA as well, because A is so high. If you drink the kool-aid, you get C & A & P.

The kool-aid isn't too bad, though if they can measurably guarantee A > 99.999999%, I'm happy to round off to 100% and call it CAP.

[ Parent | on HN ]
Re:Introducing Cloud Spanner, a Global Database Service by thesandlord on Tuesday February 14, 2017 @02:26PM (#13646332)
The availability is "only" 99.999%, which IMO is still really high!

(I work for Google Cloud)

[ Parent | on HN ]
Re:Introducing Cloud Spanner, a Global Database Service by lallysingh on Tuesday February 14, 2017 @04:23PM (#13647324)
https://uptime.is/99.999 puts that at:

Daily: 0.9s

Weekly: 6.0s

Monthly: 26.3s

Yearly: 5m 15.6s

[ Parent | on HN ]
Re:Introducing Cloud Spanner, a Global Database Service by the_cap_theorem on Wednesday February 15, 2017 @07:21AM (#13651480)
Where does it say that? Does google cloud spanner guarantee three nines uptime?

On the spanner page it says:

>> This feature is not covered by any SLA

;) ;)

[ Parent | on HN ]
Re:Introducing Cloud Spanner, a Global Database Service by thesandlord on Wednesday February 15, 2017 @11:45AM (#13653306)
Once Cloud Spanner leaves beta, it will be covered by an SLA. GCP Alpha/Beta products don't have SLAs for the most part.
[ Parent | on HN ]