Re: Modeling performance for large number of objects?

Hello,

and thanks for your reply.

>> In fact my question was raised when I read the article about ERP5 on
>> pythonology.org, with the performance values they claimed for ZODB with
>> their ZSQLCatalog add-on. I would guess that their performance claims are
>> only valid if all the queried objects are in fact in memory...?
> 
> I didn't read that article (didn't search it either I admit, do you have
> the hyperlink at hand?), 

http://www.pythonology.org/success&story=nexedi

They claim that "Reading the Zope object database is 10 to 100 times faster
than retrieving a row from the fastest relational databases available on
the market today".

And about ZSQLCatalog in particular: "a Zope database with more than
2,000,000 objects can be queried with statistical methods in a few
milliseconds"

Best regards,

Wolfgang Keller



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