[ZODB-Dev] ZODB growing / What triggers a transaction? (Geändert von jdb30570@gmx.net)

[Dieter Maurer]

jdb30570 at gmx.net wrote at 2004-9-21 22:48 +0200:
> ...
>The problem is: I have custom file and container classes derived from 
>File and Folder.

I posted extensions to "fsdump" that shows you the size of the
individual objects in a transactions.
This allows you to find out which objects are responsible
for the excessive growth.

> ...
>Each of these inherits from a class called 'UserAware' 
>which implements user specific features, such as a list of recently 
>visited items.

Keep such information in separate persistent subobjects!
Ensure that these subobjects remain small.
Good candidates are "BTree" derivatives.
Make a change to such an object only when something really changes.

-- 
Dieter