Why Redis considered to be CP? [closed]

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In short the brewer's CAP theorem states that any database is either CA,CP or AP

Why do people consider Redis as a CP database?

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The CAP Theorem refers to distributed computer systems.

Since Redis is not per se distributed (clustering is under development) being CP/CA/PA depends on the clustering implementation.

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@seppoo0010 is correct. It is more meaningful to speak of a Redis node in terms of Atomicity, Durability, etc.

Also note that CAP is a somewhat problematic paradigm. I second Dr. Brewer's recommendation of Coda Hale's informative rant. (See also comments by Daniel Abdi). Also note Jeff Darcy and Dan Weinreb's comments.

Stonebraker disagrees.

[Edit: Dan Weinreb's deep digging of CAP really is quite excellent. Highly recommended]

Finally, here is "the proof" of CAP.