Re: Proposal: Commit timestamp

On Thu, 2007-01-25 at 18:16 -0500, Jan Wieck wrote:
> For conflict resolution purposes in an asynchronous multimaster system, 
> the "last update" definition often comes into play. For this to work, 
> the system must provide a monotonically increasing timestamp taken at 
> the commit of a transaction.

Do you really need an actual timestamptz derived from the system clock,
or would a monotonically increasing 64-bit counter be sufficient? (The
assumption that the system clock is monotonically increasing seems
pretty fragile, in the presence of manual system clock changes, ntpd,
etc.)

> Comments, changes, additions?

Would this feature have any use beyond the specific project/algorithm
you have in mind?

-Neil