[Zope] when to opt for a backend DB over ZClasses?

[Dieter Maurer]

dedmundson@bigfoot.com writes:
 > I've done a number of smallish Zope sites that make
 > heavy use of ZClasses and ZCatalogs.  Now I'm involved
 > with a project where we need to create (and search over)
 > millions of objects.  Even though the objects are relatively 
 > lightweight (just a few floats and strings), should we be 
 > using a backend database rather than ZClasses?  This comes
 > up a lot in the archives, but I've never seen a clear
 > exposition of when one should forego the beauty of ZClasses
 > for a more traditional (backend) storage.
What about a little test with both approaches....

You should check:

  memory and time requirements for updates and searches

  is the ZODB growth acceptable


Dieter