Point of Sale
evan at tokenexchange.com
Thu Jan 27 11:39:23 EST 2005
Andreas Pauley wrote:
> If the network is down each POS station should still be able to function
> without interruption.
> At the moment the current POS system uses an inhouse developed message
> queing system to communicate with the ERP/Retail backend. A POS station
> submits each transaction (and other relevant messages) to a local queue,
> from where it is sent to the back-end system. If the network is down the
> messages just stay queued until the network is back up again.
> The central backend system uses the same queing technique to submit
> price updates etc. to each POS station.
You may want to check out the Spread Toolkit, at www.spread.org, whose
Python wrapper lives at http://www.python.org/other/spread/doc.html.
It's used by the Zope Replication Service, for example.
Evan @ 4-am
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