[ZODB-Dev] ZODB and ORBit-Python problems

[Jim Fulton]

Christian Robottom Reis wrote:
> 
> On Fri, 18 May 2001, Jim Fulton wrote:
> 
> > A persistent object may have multiple copies in memory. Each database
> > connection can have a copy of the object. Each copy has it's own address.
> > All references to an object in a connection point to the same object.
> > This is the only guarantee.
> 
> Does that mean that when an object is evicted from the cache, it reference
> stays taken by a placeholder? Or are all references to it updated
> automatically (gasp)?

An object is never evicted from the cache while there are any references to it.

Note that an object may be in the cache, but be a ghost, meaning that it contains
no state.

Jim

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