[Zope] ZODB.POSException.ConflictError (in custommade product)

[Dieter Maurer]

Gitte Wange wrote at 2003-10-26 11:25 +0100:
 > At 11:03 26-10-2003, Dieter Maurer wrote:
 > >Gitte Wange wrote at 2003-10-25 13:39 +0200:
 > >  > I have created a small tool for CMF to count how many times a specific
 > >  > object has been viewed.
 > >  > ...
 > >  > Now from time to time we see the following error:
 > >  > ZODB.POSException.ConflictError
 > >
 > >
 > >When you put counters in the ZODB, you should use
 > >"BTrees.Length" instances. They are small persistent objects with
 > >conflict resolution (no ZODB write conflicts) and "independence"
 > >(no ZODB read conflicts).
 > 
 > Arh ...
 > At this moment I just have a dictionary with URL as key and count as value.
 > count is a simple integer.
 > So instead I should save value as an instance of BTrees.Length() ?
 > Or just I make something else than a dictionary ?

If your counter is maintained in the ZODB, the counter should
be a "BTrees.Length" instance. Otherwise, you can use whatever
data structure seems best for you.

-- 
Dieter