Jim Fulton wrote: > On May 15, 2009, at 6:22 AM, Hanno Schlichting wrote: > >> Am I correct to assume that sharing the blob-cache between the four >> processes on the same physical machine is not supported, as these >> don't >> have any mechanism to synchronize read/write activity to the blob- >> cache? >> Or is there something in the blob design that ensures a no-conflict >> situation? > > It probably works in ZODB 3.8, although there are no tests for it. > > I made sure it works in 3.9 and there are tests for it. This is our > (ZC's) production configuration.
Ok, I'll not try it for now on a tight deadline, but will consider it for more quiet times. Unfortunately 3.9 and Zope 2.10 don't quite want to work with each other. >> Does the blob-cache grow indefinitely or is there some mechanism to >> purge / pack it built-in somewhere? > > ZODB 3.9 has an option to limit the blob cache size. We're using that > too. > > Note that the ZODB 3.9 blob cache uses it's own layout to facilitate > the management of the cache. You can't use a 3.8 blob cache with 3.9. Ok, thanks! I'll live with some outside cronjob driven purging for now. Hanno _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev