[openstack-dev] [ceilometer][all] the max length of an id

gordon chung gord at live.ca
Mon Jun 29 13:39:35 UTC 2015

On 27/06/2015 4:29 AM, Chris Dent wrote:
> Providing or displaying meaning is why we have other fields or
> lookup by reference. An id and title are not the same thing.
> The easiest way to follow the rules (that is to create unique,
> universal, persistent, portable and meaningless identifiers) is to use
> solely a UUID and nothing else when creating resource ids. If you then
> need to get additional information on that thing you know you've got a
> good id with which to get that information because it is an actual
> identifier, by definition. 

i take it this applies to namespacing as well?

i'm just curious if there is a reasoning behind the 255 length id limit? 
was there a reason UUIDs were not acceptable? or is this a byproduct of 
arbitrary, custom ids from the early days?



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