[Zope] [Further investigations] Re: A question about __setstate__ in Shared/DC/ZRDB/Connection.py

[Dieter Maurer]

Tres Seaver wrote at 2008-9-19 10:15 -0400:
> ...
>There are two problems here:
>
> - We need a way to keep the Pdata objects from evicting "precious"
>   objects;  ideally, Pdata instances would never be added to the cache
>   at all.  I worked a bit on a spike in which the Pdata iterator part
>   would use a one-off connection with a zero-sized cache, but got
>   stuck somewhere;  maybe somebody else can make it work.

But other large operations, too, can flush objects from the cache --
e.g. large scale "catalog_object".

Thus, special treatment of "Pdata" can only reduce the risk but
not remove it.



-- 
Dieter