On 10/23/18 1:47 PM, Ravi Krishna wrote:
Since the article was almost content-free I not would use it on either
side of the argument. The only thing I pulled from it was Amazon
changed databases and hit the learning curve. That will happen in
either direction.
I agree but this is the key:
"Savepoints are an important database tool for tracking and recovering
individual transactions. On Prime Day, an excessive number of savepoints
was created, and Amazon's Aurora software wasn't able to handle the
pressure, slowing down the overall database performance, the report said."
Again, pretty much content-free. For all you know some application was
creating savepoints, needlessly:
https://www.postgresql.org/docs/10/static/sql-savepoint.html
and not cleaning up after itself.
The content is here:
"Following the Prime Day outage, Amazon engineers filled out a 25-page
report, which Amazon calls a correction of error. It's a standard
process that Amazon uses to try to understand why a major incident took
place and how to keep it from happening in the future."
Not sure if that is publicly available or not, though my hunch is no.
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
