Ah -- makes sense. Thanks. On 30/05/2011, at 11:40 AM, Ed Leafe wrote:
> On May 29, 2011, at 9:01 PM, Mark Nottingham wrote: > >> WIth regards to UUIDs -- I'm not sure what the use cases being discussed are >> (sorry for coming in late), but in my experience UUIDs are good fits for >> cases where you truly need distributed extensibility without coordination. >> In other uses, they can be a real burden for developers, if for no other >> reason than their extremely unwieldy syntax. What are the use cases here? > > > The primary use case I can think of is a deployment with several zones > that are geographically dispersed. Since each zone is shared-nothing with > other zones, UUIDs are the most logical choice for instance IDs that need to > be unique across zones. This is precisely the use case that UUIDs were > created for. > > In my experience, UUIDs are no more of a programmatic burden than any > other sort of PK; the only place where they are "unwieldy" is when humans > have to type them into a command line or a browser URL. But since most humans > doing that would have access to copy/paste, it isn't nearly as bad as it > might seem. > > > > -- Ed Leafe > > > > Confidentiality Notice: This e-mail message (including any attached or > embedded documents) is intended for the exclusive and confidential use of the > individual or entity to which this message is addressed, and unless otherwise > expressly indicated, is confidential and privileged information of Rackspace. > Any dissemination, distribution or copying of the enclosed material is > prohibited. > If you receive this transmission in error, please notify us immediately by > e-mail > at ab...@rackspace.com, and delete the original message. > Your cooperation is appreciated. > -- Mark Nottingham http://www.mnot.net/ _______________________________________________ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
