On Wed, 17 Sep 2014 04:53:28 PM Duncan Thomas wrote:
> On 16 September 2014 01:28, Nathan Kinder <nkin...@redhat.com> wrote:
> > The idea would be to leave normal tokens with a smaller validity period
> > (like the current default of an hour), but also allow one-time use
> > tokens to be requested.
> 
> Cinder backup makes many requests to swift during a backup, one per
> chunk to be uploaded plus one or more for the metadata file.

Right, and what if the HTTP connection times out and needs to be retried. Can 
I reuse my "single use" token?

Also: single-use tokens scale badly since they need a strongly consistent 
validation point that in normal use requires frequent writes.

-- 
 - Gus

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