[Zope3-Users] Concurrent data access in Zope

[Andreas Jung]

--On 11. April 2006 13:26:10 +0200 Achim Domma <domma at procoders.net> wrote:


>
> How is access synchronisation to such a structure handled in Zope? What
> happens automatically? What do I have to do on my own?
>

First come, first serves. There is no fancy synchronization. If two threads 
are trying to modify the same object then one thread will receive a 
WriteConflict error. It is up to the app to deal with these kind of errors. 
In the Zope 2 world Zope tries to re-do the current transaction for up to 
three times before the ConflictError is passed up to the application.

-aj


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