I've created a proposal:

  http://www.zope.org/Wikis/ZODB/DecouplePersistenceDatabaseAndCache

for simplifying and decoupling the persistence and cache architectures.
I've been thinking about this for quite some time.  In fact, the ability to 
subclass
weakref.ref objects that appeared in Python 2.4 anticipates this. :)

Dieters's recent proposal, especially

  http://www.zope.org/Wikis/ZODB/MemorySizeLimitedCache

spurred me to begin writing these ideas down.  My proposal is an
alternative to the first part of Dieter's proposal.

Jim

--
Jim Fulton           mailto:[EMAIL PROTECTED]       Python Powered!
CTO                  (540) 361-1714            http://www.python.org
Zope Corporation     http://www.zope.com       http://www.zope.org
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