Multi-writer replication has been a challenge in the MySQL ecosystem for years before truly dedicated solutions were introduced  first Galera (and so Percona XtradDB Cluster (PXC)) replication (around 2011), and then Group Replication (first GA in 2016). Now, with both multi-writer technologies available, do we still need traditional asynchronous replication, set up in active-active [&]

https://www.percona.com/blog/2021/04/28/resolving-the-mysql-active-active-replication-dilemma/