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Overview of Distributed Transactions: Two-Phase Commit and Three-Phase Commit Protocols

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This lecture explores distributed transactions and commit protocols, focusing on the Two-Phase Commit (2PC) and Three-Phase Commit (3PC) methods. It covers key concepts such as the base protocol, the successful outcome of transactions, and asynchronous end record writing. Additionally, it delves into state diagrams illustrating presumed commit and presumed abort scenarios. The roles of coordinators and participants in these protocols are examined, providing a comprehensive understanding of how these systems maintain consistency and reliability across distributed databases.

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Overview of Distributed Transactions: Two-Phase Commit and Three-Phase Commit Protocols

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Presentation Transcript

  1. Lecture 13 Distributed Transactions and Commit Protocols

  2. Two-Phase Commit • Base protocol • Successful outcome • End record written asynchronously

  3. State Diagrams

  4. Presumed Commit

  5. Presumed Abort

  6. Three Phase Commit (3PC) Coordinator Participant

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