[Zope] Session bugs around CAS4PAS integration in Plone

Tres Seaver tseaver at palladion.com
Fri Dec 18 12:32:25 EST 2009

Hash: SHA1

Encolpe Degoute wrote:


> Our problem is user can obtain another session opened with CAS when the
> server is overloaded. It happens only one the first page loaded for a
> session and once the user get the session he keeps it  until is logout.
> There is no web cache and Zope serve pages directly to them.
> There is 4 threads and 5000 objects in session cache.
> We suspect a session cache bug but we don't know how to debug it as the
> bug comes randomly when the server is overloaded (more than 5 concurrent
> users).
> Any tips to build a test environment for this ?

I don't know anything about the guts of CAS4PAS.  If you think this is a
bug in the sessioning machinery itself, you might try swapping out an
alternate session data manager, e.g. 'faster':


If that makes the problem go away, thenn you could work on trying to
reproduce the problem in isolation.  If not, then the bug is in the
CAS4PAS code itself.

- --
Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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