Group Replication VS Percona XtraDB Cluster: The True Cost of Consistency (from Percona Database Blog)
pOverview When building high-availability MySQL environments, the choice between MySQL Group Replication (GR) and Percona XtraDB Cluster (PXC) often comes down to how they handle the eternal database dilemma: data consistency versus performance. While both provide “synchronous-like” replication, they approach the problem of stale reads—reading data that has been committed on one
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