[Qt-interest] QUuid with QUuid::Time

[Oliver.Knoll at comit.ch]

Konrad Rosenbaum wrote on Monday, June 14, 2010 3:41 PM:

> ... 
> With the algorithms given and the width of the value you don't get
> anything better. The correct name for this thing would be QLUID -
> quite likely unique ID, but UUID with the first "U" being translated
> as "universally" was better marketing... ;-)   

This apparently matches with this guy's experience:

"It should not happen. However, when .NET is under a heavy load, it is possible to get duplicate guids. I have two different web servers using two different sql servers. I went to merge the data and found I had 15 million guids and 7 duplicates." (http://stackoverflow.com/questions/39771/is-a-guid-unique-100-of-the-time)

So to me 7 duplicates out of 15 million seems quite a lot of "not so universally unique instances". Off course he was using .NET, whereas we use Qt... ;)

Cheers, Oliver
-- 
Oliver Knoll
Dipl. Informatik-Ing. ETH
COMIT AG - ++41 79 520 95 22