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  • Writer's picturePuru Uttam

CAP Theorem

Fundamentals of CAP Theorem


  • CAP theorem is becoming known due to the increase hype around No-SQL database.

  • CAP theorem, also known as Brewer’s theorem,

  • States that it is impossible for a distributed computer system to simultaneously provide all three of the following guarantees:

  • Consistency (all nodes see the same data at the same time)

  • Availability (a guarantee that every request receives a response about whether it was successful or failed)

  • Partition tolerance (the system continues to operate despite arbitrary message loss).

According to the theorem, a distributed system can satisfy any two of these guarantees at the same time, but not all three.


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