Severalnines Blog

Active-Active MySQL Group Replication Best Practices

March 11, 2026 Paul Namuag
In MySQL Group Replication (MGR) or Group Replication, an active-active configuration allows multiple group members to accept concurrent write transactions. These writes are coordinated through a consensus-based group communication system (GCS) and validated via write-set certification to preserve global transactional consistency as defined by the Group Replication protocol. active-active mode...

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