Re: UUID

From: chengm349_at_[hidden]
Date: 2021-07-28 21:19:43

how about 64-bit value if we ignore timestamps only part recommendation?

Sent from my Huawei Mobile


-------- Original Message --------
Subject: Re: [Boost-users] UUID
From: Richard Damon via Boost-users

To: [e-mail]
CC: Richard Damon



> On 7/27/21 11:34 PM, Ming Cheng via Boost-users wrote:
> >
> > I have a UUID requirement as:
> >
> >   * Each session will also be represented with a Universally Unique ID
> >     (UUID), which should be a current timestamp
> >   * a unique UUID value set by the customer as a 64-bit value. CME
> >     Group recommends using the system timestamp which represents the
> >     number of microseconds since epoch (Jan 1, 1970) as the timestamp.
> >   * I also need to save it in a Linux file and rebuild the UUID from
> >     the saved value.
> >
> > Wondering whether boost UUID code can support it?  I checked online
> > document and seems to me quite difficulty except archiving.
> >
> My first thought is someone doesn't know what a UUID is. 'The Current
> Timestamp' is NOT a UUID, and the chance of duplicates is going to be
> reasonable high if sessions might be started on multiple machines at
> about the same time.
>
> -- 
> Richard Damon
>
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