I hate UUIDs with a passion. * They are text fields, which means slower database indexes * They are completely user-unfriendly. The whole "copy and paste" argument borders on silliness * The bursting scenario makes no sense to me. Why do two different clouds need to agree on uniqueness of resource IDs? (said as one of the few people actually doing bursting) * And uniqueness across regions for "share nothing" can be managed with a variety of alternative options without resorting to the ugliness that is UUIDs
On Jun 2, 2011, at 7:40 PM, Glen Campbell wrote: > > There was another specific use case, where someone with a private > OpenStack cloud was bursting into a public cloud. UUIDs would help ensure > the uniqueness of identifiers in that case. > > > > On 5/29/11 8:43 PM, "Mark Nottingham" <m...@mnot.net> wrote: > >> 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 > > > > 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. > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp -- George Reese - Chief Technology Officer, enStratus e: george.re...@enstratus.com t: @GeorgeReese p: +1.207.956.0217 f: +1.612.338.5041 enStratus: Governance for Public, Private, and Hybrid Clouds - @enStratus - http://www.enstratus.com To schedule a meeting with me: http://tungle.me/GeorgeReese
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