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The dual sense of consistency

Michael Nygard in an article that looks at the 2, completely unrelated, definitions of consistency; the one in ACID and the one from CAP:

So it turns out that “consistency (predicate)” and “consistency (history)” are two distinct ideas that happen to share a word. It is always an error to substitute the distributed systems definition of “consistency” for the C in ACID.

Original title and link: The dual sense of consistency (NoSQL database©myNoSQL)

via: http://thinkrelevance.com/blog/2013/12/23/beware-inconsistent-definitions-of-consistency