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A comment on Your ATM does not use transactions.

Re:Your ATM does not use transactions by dhx on Thursday January 10, 2013 @06:16AM (#5036406)
Eric Brewer[1] describes why ATMs are not designed for consistency[2] at [3] (scroll down to the last two sub-headings).

[1] https://en.wikipedia.org/wiki/Eric_Brewer_%28scientist%29

[2] https://en.wikipedia.org/wiki/CAP_theorem

[3] http://www.infoq.com/articles/cap-twelve-years-later-how-the...

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