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What does the CAP theorem state?

  1. A A distributed system can guarantee at most two of consistency, availability and partition tolerance
  2. B All three can always be guaranteed
  3. C Only consistency matters
  4. D Partition tolerance is optional
Answer

A distributed system can guarantee at most two of consistency, availability and partition tolerance

Since network partitions will occur in practice, the real choice is between consistency and availability during a partition.

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