> Neil Aggarwal wrote:
>> There are a few things we do:
>> 1. When we place an order, we commit the order to the database in
>> a transaction.
>> 2. In a separate transaction, we reduce the qty available of the
>> product by the amounts ordered. This transaction may be
>> a conflict with other transactions. That is OK.
>> 3. The inventory management system keeps the master inventory
>> of the products. We have a continuous job that pulls the
>> latest updates to the inventory and feeds those updates
>> back to the web database.
>>
>> So, even if an inventory number is wrong for a short time, it will
>> be updated to an accurate number soon.
>>
> that may be OK for an order processing system, but it could be a serious
> problem for something like a banking system where you are dispersing cash.
True... but such a system would, by default, be RT.
mark