openstack team mailing list archive

[Eric Day <eday@xxxxxxxxxxxx>]

See my previous response to Justin's email as to why UUIDs alone are
not sifficient.

-Eric

On Tue, Mar 22, 2011 at 04:06:14PM -0400, Brian Schott wrote:
> +1
> Sounds like some IPV6 discussions back when the standards were being debated.  We could debate bit-allocation forever.  Why can't we use UUIDs?
> 
> http://tools.ietf.org/html/rfc4122
> 
> """
> 2.  Motivation
> 
> 
>    One of the main reasons for using UUIDs is that no centralized
>    authority is required to administer them (although one format uses
>    IEEE 802 node identifiers, others do not).  As a result, generation
>    on demand can be completely automated, and used for a variety of
>    purposes.  The UUID generation algorithm described here supports very
>    high allocation rates of up to 10 million per second per machine if
>    necessary, so that they could even be used as transaction IDs.
> 
>    UUIDs are of a fixed size (128 bits) which is reasonably small
>    compared to other alternatives.  This lends itself well to sorting,
>    ordering, and hashing of all sorts, storing in databases, simple
>    allocation, and ease of programming in general.
> 
>    Since UUIDs are unique and persistent, they make excellent Uniform
>    Resource Names.  The unique ability to generate a new UUID without a
>    registration process allows for UUIDs to be one of the URNs with the
>    lowest minting cost.
> 
> """
> 
> Brian Schott
> bfschott@xxxxxxxxx
> 
> 
> 
> On Mar 22, 2011, at 2:53 PM, Jay Pipes wrote:
> 
> > I know you don't want to resurrect a past discussion. But, UUIDs are
> > designed to solve these kind of problems, frankly. The decision to go
> > with integer IDs is a poor one, and will be negatively affecting the
> > scalability and architecture of our systems well into the future.
> > 
> > I'd love to see a discussion around moving away from internal integer
> > identifiers and towards UUID internal identifiers at the next summit.
> > 
> > Just my 2 cents,
> > -jay
> > 
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