[ZODB-Dev] On ZODB for discardable data

[Paul Roe]

Hi Manuel,

On Mon, 2007-01-22 at 22:58 -0500, Manuel Vázquez Acosta wrote:
> Hi all,
> 
> I would like some advice on ZODB for an specific scenario. We're
> working on a Product  that will collect the contents of web pages and
> find similar ones, and make summaries of its contents.
> 
> This process involves downloading the webpages and create the VSM for
> those documents so we can run the clustering and summarizing
> algorithms.
> 
> However by the very nature of our application, everytime we run the
> entire process we should discard the old result, keeping the used
> space nearly constant.
> 
A while back we developed a ZODB based wxPython application where part
of the data was imported whenever it had changed.

We had a separate ZODB for this data which allowed us to just delete the
old database file as part of the refresh step. The refresh step closed
the database, deleted it, created a new one, added the catalog and
indexes and imported the data. All the other data was safely in the
separate ZODB file.

Not sure if your problem lends itself to this simple solution.

Paul

> My question is if ZODB can be used in that way. If not, which are the
> options (should I make my own storage?)
> 
> Best regards,
> Manuel.
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