[Zope] Problem with multiple Browser Id Managers

[Pablo Ziliani]

Dieter Maurer wrote:

>Pablo Ziliani wrote at 2005-11-18 20:37 -0300:
>  
>
>>... using the same "session data container" by various "session data manager"s ...
>>However now my question is: can't this configuration lead to session 
>>collisions, given that now I have multiple BIMs/SDMs making writes to 
>>the same TrOC?
>>    
>>
>(...)
>   Even a single browser id manager does not explicitely protect
>   itself from handing out the same browser id twice.
>   But the probability is very low indeed: the session
>   id consists of a time stamp (second resolution, I think)
>   and a 4 byte (pseudo) random number.
>(...)
>   *BUT* not sure whether the (pseudo) random number generator
>   behaves well in the presence of multiple threads accessing
>   it concurrently. It may well be that it delivers the same
>   number for different threads accessing it concurrently
>   which *MUCH* higher probability as one would expect...
>(...)
>  
>
Ok, this sounds fairly safe to me. Besides, my sites aren't that heavily 
loaded yet and I'm actually keeping the installation's default number of 
threads (4).
Again, thanks a lot, Dieter.

Pablo