Databases · Senior · Question 27 of 75

What does the CAP theorem say?

1Caching, Availability and Performance can't coexist
2A system can be consistent, available and partition-tolerant at all times
✓Correct answer: During a network partition, a distributed system must choose between consistency (linearizability) and availability

Explanation

Partitions can't be avoided, so the real choice is what happens during one. PACELC adds that without partitions you trade latency for consistency.

Further reading

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