2 Phase Commit Protocol скачать в хорошем качестве

2 Phase Commit Protocol

The Two-Phase Commit (2PC) Protocol is a distributed database protocol used to ensure atomicity in transactions across multiple nodes. It consists of two phases: 1. Prepare Phase: The coordinator sends a request to all participating nodes, asking if they can commit the transaction. Each node responds with "Yes" (ready) or "No" (abort). 2. Commit Phase: If all nodes agree, the coordinator sends a commit command; otherwise, it sends an abort command, ensuring consistency. This protocol prevents partial commits but can cause delays if a node fails.