We are well aware that MySQL Group Replication is one of the
faster evolving clustering Technology for MySQL. Flow Control
plays a key factor in Group Replication performance and data
integrity . In this blog I am going to explain about the Flow
Control mechanism and How it has evolved in MySQL 8 ?
What is Flow Control ?
MySQL Group Replication / Native Async replication needs binary
logs to get the data flow across the servers.
What makes the difference ?
In the MySQL Group Replication we are trying to achieve the
Synchronous replication with the help of a Flow Control mechanism
and transaction acknowledgments ( certification ).
Without Flow Control, the MySQL Group Replication is asynchronous
replication ? Yes, consistency is lost.
Lets us consider
We have three nodes ( GR1, GR2, GR3 ) . Gr1 is the master and and
other two servers ( GR2, GR3 ) are the …[Read more]