Would it be better to use an SQL-style timestamp ("YYYY-MM-DD HH:MM:SS.MMM") + unique id, then? They sort lexically the same as they sort chronologically.

On Wed, Jun 2, 2010 at 4:37 PM, Leslie Viljoen <leslieviljoen@gmail.com> wrote:
On Mon, May 31, 2010 at 8:52 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
> OPP uses lexical ordering on the keys, which isn't going to be the
> same as the natural order for a time-based uuid.

*palmface*