[ZODB-Dev] High Write Applications

Chris Withers chrisw at nipltd.com
Tue Aug 5 12:31:01 EDT 2003


Phillip J. Eby wrote:
> 
> No.  ZODB does object persistence, Prevayler does object prevalence.  

Hmmm... the dictionary didn't help me find out what that means. What is prevalence?

> Note also that there is a Prevayler-like system for Python: PyPersyst.
> 
> The nice thing about a prevalence architecture is that it's dramatically 
> simpler than a persistence architecture, provided you 1) have the memory 
> and 2) don't mind architecting around command classes, and 3) don't mind 
> taking forever for an application to restart.  I have some thoughts 
> about how to make #2 relatively transparent, but #1 and #3 are generally 
> more of an issue.

Indeed :-S

Chris




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