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MySQL: Guides and Practical Know-how | Page 12 | mironsoft Blog

MySQL

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Group Replication: Understanding Conflict Detection in Multi-Primary Setups

Jan 3, 2025

As soon as several nodes in a Group Replication accept write access at the same time, certification-based conflict detection decides which transaction wins and which one gets rolled back. Anyone who does not understand this mechanism ends up building applications that regularly fail under multi-primary operation with seemingly random rollbacks.

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