2 Phase Commit | System Design | High Level Design
Welcome to a concise guide on the Two-Phase Commit protocol in system design! Join me as I explore this essential technique for ensuring distributed transaction consistency.
What is Two-Phase Commit?
Two-Phase Commit (2PC) is a protocol used in distributed systems to ensure that all nodes in a transaction either commit or roll back changes, maintaining data consistency.
How Two-Phase Commit Works
1. Prepare Phase: The coordinator asks all participating nodes to prepare to commit and logs their responses.
2. Commit Phase: If all nodes are prepared, the coordinator sends a commit message; otherwise, it sends a rollback message.
Use Cases
Distributed Databases: Ensures data consistency across multiple databases.
Microservices: Manages transactions involving multiple microservices.
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