[Zope] temp_folder not MountTemporaryFolder?

Chris McDonough chrism at plope.com
Sun Jun 24 21:43:47 EDT 2007


On Jun 24, 2007, at 9:31 PM, Manuel Vázquez Acosta wrote:

> Let me see if I got this right:
>
> According to ZODB.Mount.MountPoint: mount points are Zope objects
> that, when traversed, accesses a different database.

You got it.

>
> Do they report themselves as the container-class defined in zope.conf?
> I mean, when I traverse to /temp_folder what do I get? Is it the
> MountPoint instance or the container-class instance? Where should I
> look for this code?

It's the container-class instance (or at least it looks like it when  
you get there, it does a bunch of trickery under the hood).  The  
default container class is  
Products.TemporaryFolder.TemporaryContainer.  You can influence it  
within zope.conf though. One of the container class instances  
(mounted at the /temp_folder mount point) is created within the  
OFS.Application.install_tempfolder_and_sdc method during Zope startup.

>
> I have "tried" faster but without any luck. I modified OFS.Application
> and replaced TransientObjectContainer with
> faster.SessionDataContainer, but still I had too many ConflictErrors
> (didn't make any measure to compare with TransientObjectContainer).

Have you tried putting the session data container *not* in  
temp_folder?  In other words, create a session data container in the  
root of your zodb, then cause the session_data_manager object to  
point at that?  You may observe better performance (with the penalty  
of more storage growth) because FileStorage is typically better at  
resolving conflicts nowadays than TemporaryStorage is.  Note that if  
you're using ZEO, don't put the data container in the root, you will  
only get more conflicts.  Instead, mount a FileStorage somewhere.   
See http://plone.org/documentation/how-to/multiple-plone-sites-per- 
zope-instance-using-separate-data-fs-files-for-each-one for a  
reasonable explanation of how to create new mount points (ignore the  
Ploney bits, only pay attention to steps 1 and 2).

- C



More information about the Zope mailing list