[Zope-dev] Conflict errors on BDBMinimal storage

[Gerhard Schmidt]

On Mon, May 17, 2004 at 12:45:16PM -0400, Chris McDonough wrote:
> On Thu, 2004-05-13 at 05:23, Gerhard Schmidt wrote:
> > Hi,
> > 
> > whe are running portal unter zope2.7 with one zeo server and six frontend 
> > application servers. 
> > 
> > I have set up zeo to server two storages
> > 
> > <filestorage main>
> >   path $INSTANCE_HOME/var/Data.fs
> > </filestorage>
> > 
> > <minimalstorage temp>
> >   envdir $INSTANCE_HOME/var/session
> > </minimalstorage>
> > 
> > temp should provide an shared session. But when is set up the frontends 
> > to use temp as /temp_folder, we see many  ZODB conflict errors. The 
> > performance decreases and PosErrors appear quite often. 
> 
> BDBMininalStorage is no longer maintained and doesn't do any "conflict
> resolution".  

Why this. I was told some time ago we should use BDBMinimalStorage to 
fix the conflict problems. 

> Even though you'll need to pack frequently, you might want
> to try a FileStorage instead.

There is no difference between BDB Storage and Filestorage regarding 
the conflicts. 

> Regardless, using ZEO will presumably always generate more conflict
> errors than using a "local" ZODB because the commit time is longer, and
> thus there's a better chance that two threads will be committing at the
> same time.

The bottom line is that there is no way of getting an shared session 
running. Why isn´t there an implementation of temporary storage for ZEO 
I dont care about conflit resolution. Its only session data. I simply 
need a shared session storage. But as Far as i can see the is no way 
of doing this. Are we the only site out there running Plone2 (Placeless
transaltion Service) at that scale. How do others handle there Session 

Bye
	Estartu 

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Gerhard Schmidt    | Nick : estartu      IRC : Estartu  |
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