MySQL Group Replication: Group Replication: It is a plugin build on existing Mysql replication infrastructure features such as binary log, row-based logging, and global transaction identifiers. Group replication is not a regular point-to-point connection, as in classical Replication, but rather a different paradigm: Group Communication. It is a classic modular and layered piece of software, and communication module - Group communication API and Corosync up to MySQL Group Replication 0.5.0. Group replication plugin: Consists of API- Capture / Apply / Life cycle, Capture, Applier, Recovery, Replication protocol logics, Group communication system API, Group Communication Engine ( Paxos variant ), Mencius. It is Paxos-based solution, named eXtended COMmunications, or simply XCOM , which is a key component in the MySQL Group Replication.Key functionalities of XCOM are Order Delivery, Dynamic Membership, and Failure detection . Paxos is probably the most well known consensus pr...
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