beginnerNoSQL Fundamentals — CAP, BASE & Eventual Consistency

What is the CAP Theorem and why does it matter for NoSQL database selection?

CAP Theorem states that a distributed system can only guarantee two of three properties: Consistency (every read gets the latest write), Availability (every request gets a response), and Partition Tolerance (system works despite network partitions). Since network partitions are unavoidable, the real choice is CP vs AP. CP (MongoDB, HBase, Zookeeper): returns error if consistency can't be guarantee

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