[Zope] Best policy to assign policy to assign ids to objects inside BTreeFolder2

Hi all. I need to create a number of objects inside a BTreeFolder2 container. I would like to minimize the chances of conflicts, so I'm exploring possibilities to assign ids; up to now I've found the following: - timestamps - random numbers What is the best choice to reduce the chances of conflicts? Regards Marco -- Marco Bizzarri http://iliveinpisa.blogspot.com/