Mignon, Laurent wrote at 2008-2-6 08:06 +0100:
>After a lot of tests and benchmark, my feeling is that the ZODB does not seem 
>suitable for systems managing many data stored in a plane hierarchy.
>The application that we currently develop is a business process management 
>system in opposition to a content management system. In order to guarantee the 
>performances necessary, we decided to no more use the ZODB. All data are now 
>stored in a relationnal database.

Roché's corrected timings indicate:

  The ZODB is significantly slower than Postgres for insertions
  but camparatively fast (slightly faster) on lookups.

For more information about ZODB, see the ZODB Wiki:

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