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The CAP (Consistency, Availability, and Partition-tolerance) theorem has been widely interpreted within the NoSQL community as justifying the weakening of consistency in order to support high availability. The eventual consistency model, in particular, has become a design default for many NoSQL systems. A more careful look at the CAP theorem shows that it precludes only small portion of the design space for distributed systems and does not compel the adoption of eventual consistency. Moreover, the weakness of eventual consistency creates a technical debt that is borne by the developers making use of the data store.

Posted by martinig  |   May 07 2013 / 11:20

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