On Mon, 2004-05-17 at 14:57, Gerhard Schmidt wrote: > > > Why isnÂt there an implementation of temporary storage for ZEO > > > > There is, just use the "tempstorage" package from Zope. > > I didnÂt find a way to use Tempstorage in zeo. > > <temporarystorage> > name temporary storage for sessioning > </temporarystorage> > > didnÂt work. How do i Set up a temporarystorage in zeo.
Good question. ;-) It involves changing the ZEO configuration machinery to recognize the tempstorage package. The steps to do this I couldn't tell you without actually doing it, however. > > > I dont care about conflit resolution. Its only session data. > > > > For better or worse, because it is based on ZODB, the implementation > > makes you need to care. > > Than maybe the sessioncode should be redesigned not to use ZODB as > storage but store ther information in some different system maybe > a RDMB or some other system able to handle the kind of usage. Zope doesn't ship with a useful and maintained relational database. You can implement your own SQL-based TransientObjectContainer using the interfaces defined in Transience/Interfaces.py if you wish, or use Anthony Baxter's SQLSession product. It would be nice if there was an alternate implementation that used a relational database like this. > > > I simply > > > need a shared session storage. But as Far as i can see the is no way > > > of doing this. Of course there is, it's just not built in. ;-) > > > > I don't understand. You seem to have it working. Is performance the > > issue? > > The Performance decrase is there but the Problem is far deeper. If > an read conflict isnÂt resolved after three retries an Exception is > raised an the request is aborted. And thats the real problem. I see. I'm not sure switching to TemporaryStorage will help much. I would first try using a FileStorage and make sure to put the Zope "lib/python" directory on the ZEO server's Python's PYTHONPATH (to allow for conflict resolution under ZEO, ZEO must be able to import the Products package and subpackages therein). I don't know if this will help very much, but it's worth a shot. > > > Are we the only site out there running Plone2 (Placeless > > > transaltion Service) at that scale. How do others handle there Session > > > > AFAIK Zope is the only appserver that even makes an attempt at allowing > > session data to be shared between servers like this. Most other > > appservers require you to set up "session affinity" in your load > > balancer and have a session database on each appserver. > > and nealy every system failed to do so. How do you implement this > session affinity. Based on source IP. At the moment every large ISP > uses multiple Proxyserver so every request comes from a different > IP so the affinity doesnÂt work for them. The Proxyserver provided by > our Computing Center is also split on at least 8 Hosts, so everyone > using this proxy would lose session infomation, getting very strange > effekts. Yes. It's a hard problem. - C _______________________________________________ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )