[Zope] FileSystem Storage (was: Re: [Zope] Zope's scalability across multiple web servers)

[Jason Spisak]

Michael Bernstein:

> Basically, the ZODB is optimized in design for many reads and few
> writes, and the filesystem is not. This means that in many-write
> situations, the ZODB is working much harder than usual, and performance
> of the site will go down faster than under an equivalent number of
> reads.
> 

That makes sense.

> > > statistically it should even out with as many 'up' moderations being
> > > discarded accidentally as 'down' ones.
> > 
> > Is it because there is no locking?
> 
> Yes.
> 
 Okay.  I get it.  So if the files system took care of the
journaling/transaction end of things then that would close that hole?

> I beleive that this tradeoff (transactional integrity vs. efficient
> writes) would be made irrelevant if the FS in question was either
> ReiserFS or the IRIX Journalling FS, but I don't really know enough
> about either to be certain.

Is there currently a Product that uses the filesystem like you are talking
about?  FSSession?  Is there a product to store the all my ZClass instances
let's say on the file system right now?


All my best,

Jason Spisak
CIO
HireTechs.com
6151 West Century Boulevard
Suite 900
Los Angeles, CA 90045
P. 310.665.3444
F. 310.665.3544

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