[Zope-dev] Re: maximum number of mounted databases with APE?

[Tres Seaver]

Dario Lopez-Kästen wrote:
> Tres Seaver wrote:
> 
>> WRT DBTab:  as of Zope 2.7, that product is obsolete:  its 
>> functionality has been folded into Zope.Startup's processing of the 
>> config file.
> 
> We have to use DBTab atm because we are still using 2.6.2 in production 
> and we haven't tested 2.7 yet for this particular application.

OK, no problem.

> would it be safe to assuem that if we keep the number of monted 
> databases below 15 or even 10, are we on the safe side?

I know of 2.6-based applications which use ~20-25 storages (but many of 
them stay "idle" most of the time).  The obvious caveats apply.

> BTW - we use DirectoryStorage and had to patch DBTab to make this work 
> (that patch is pending more time to be finalised and released) - do we 
> need to do the same with Zope 2.7?

The DirectoryStorage product will need to register a new schema 
component for Zope 2.7, to permit configuring DS-based storages within 
zope.conf.

> I haven't looked at Zope 2.7 yet, so I haven't been able to determine 
> for myself of much alike/different it is from DBTab in this regard.

The spirit is similar, but more declarative.  See the schema:

   http://cvs.zope.org/Zope/lib/python/Zope/Startup/zopeschema.xml

Tres.
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Tres Seaver                                tseaver at zope.com
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