[CentOS] MySQL max clustering package?
John R Pierce
pierce at hogranch.com
Wed Mar 17 19:57:39 UTC 2010
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.
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