Some of you may use MySQLs asynchronous replication feature called Semisynchronous Replication (aka semi-sync), and now with the MySQL Semi-Sync Summary Dashboard + Percona Monitoring and Management (PMM), you can see the most important metrics! Refer to the Install & Usage steps for deployment details (note you need Replication Set defined!). What is Semisynchronous Replication [&]

https://www.percona.com/blog/percona-monitoring-and-management-mysql-semi-sync-summary-dashboard/