[Zope] newbie: why external database?

[Chris Withers]

> I want to develope a forum with zope. There are products wich store
> messages and replies in the ZODB. In case this forum will become
> crowded, this seems to me not the right way ( ? ). I've read that ZODB
> does a good job if 99% of the users only read. 

Mostly rubbish, try Squishdot:
http://www.squishdot.org

I know of people with 2000-6000 postings and no problems.

> Is this right? Can
> somebody tell me at wich "size" (e.g. amount of users, hits, etc... ) an
> external db is needed?

...hardly ever, IMNSHO.

cheers,

Chris