> So, why is the default Transient Object Container put in a
> If I want to use an application specific one that doesn't get lost
> restart, is it OK to put it into a normal persistent folder?
The TOC is put into the temp folder mostly because:
1) Sessions are write-intensive and cause bloat on undoing storages
2) Sessions are write-intensive and cause conflicts when accessed
via a "normal" ZODB connection. The temp folder is mounted into
a database which has a special "low conflict" connection type
that ignores read conflict errors.
You will get more conflicts and more bloat if you put a TOC into a
normal persistent folder (esp. one backed by FileStorage), but it
will work. That said, there are a few bugs in the 2.5 "transience"
implementation that I'm working on as we speak that might be more
egregious if you have a truly persistent TOC, so pls. keep an eye
towards 2.6 (or CVS ;-) in the next few weeks. You will notice the
bugs in the form of phantom key errors (not unlike the old Catalog
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