On Fri, Apr 25, 2014 at 04:18:18PM +0100, Greg Stark wrote: > Which isn't to say they're a bad idea but like everything else in > engineering there are tradeoffs and no such thing as a free lunch. > You can avoid depleting the entropy pool by including data you expect > to be unique as a kind of fake entropy -- which quickly gets you back > to looking for things like MAC address to avoid duplicates across > systems.
ISTM you could use the database identifier we already have to at least produce "UUID"s which are unique amongst PostgreSQL instances. That might be something worth aiming for? Have a nice day, -- Martijn van Oosterhout <klep...@svana.org> http://svana.org/kleptog/ > He who writes carelessly confesses thereby at the very outset that he does > not attach much importance to his own thoughts. -- Arthur Schopenhauer
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