Thierry Florac writes:
... "request['AUTHENTICATED_USER']" is a complex object which cannot be stored inside ZODB. ... I've finally decided to try the ZSession product, which can store complex objects like AuthenticatedUser. It seems to work as specified above... Be very careful, when you store persistent objects in any cache (a session belongs to this type)!
They have an implicit reference to a ZODB connection. This reference is valid only during the current request. You may get all sorts of weird errors when the object later tries to use this reference. I spend days to locate such an error. It appears as if Zope were non-deterministically crashing, telling me that "None" does not have attributes, oid being invalid and objects being referenced from outside a connection... Dieter