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Two Phase Protocol

Definition

A Two Phase Protocol is a type of distributed algorithm designed to ensure that all participating nodes in a network either commit to a transaction or abort it, maintaining data consistency. This protocol typically involves a “prepare” phase where nodes signal readiness and a “commit” phase where the final decision is broadcast. It is crucial for maintaining atomicity in distributed transactions, ensuring that operations are completed entirely or not at all. This method prevents partial updates and data discrepancies.