On Mon, Aug 3, 2009 at 9:09 PM, Gary Poster<gary.pos...@gmail.com> wrote: > > On Aug 3, 2009, at 3:00 PM, Gustavo Rahal wrote: ... > Practically, using the BTrees that the ZODB provides will typically > have the behavior you want for the first and third gotcha. For the > second gotcha, we typically give each connection to the ZODB its own > random starting point stored on a volatile (disposable) attribute for > the index, and each connection increments that point. Look at the > code in zope.intid, for instance: _generateId in > http://svn.zope.org/zope.intid/trunk/src/zope/intid/__init__.py?rev=100049&view=auto
Gustavo, Note that a simpler variation on this is to assign the values randomly. Assigning them sequentially from a random starting point is an optimization to reduce the number of BTree nodes read and updated by a particular client. Jim -- Jim Fulton _______________________________________________ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
