On 09/12/2013 06:42 AM, Adam Reynolds wrote:
> The customer will care when the last item in stock is sold twice. You
> are right, in the initial work, it's all about the pretty stuff, but the
> backend implementation should be scalable as the customer grows. 
> 
> The last thing a customer wants to hear is that the solution works as
> long as you don't have too much business.
> 
> Seriously this ability to track stock accurately is the most important
> thing to a business. Having spent a lot of my 13+ years in e-commerce
> development, this stuff is absolutely critical. The 'design' is
> irrelevant when the MD of a company wants to know precisely how much
> stock is in the warehouse, and in your case, why we've sold 3 times as
> many products than we have in stock, just because the site got busy
> after they ran an advert on TV last night.
> 
> ACID compliance has serious financial implications and is why people
> keep harping on about it. It's really really really important.

Using `save` is not ACID, but using `update` it is.


-- 
Jose Luis Rivas
http://joseluisrivas.net/

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