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https://dev.mysql.com/doc/refman/5.7/en/group-replication-fault-tolerance.html
MySQL Group Replication builds on an implementation of the Paxos distributed algorithm to provide distributed coordination between servers. In practice this means that to tolerate one failure the group must have three servers in it. However, if a ...As such, it requires a majority of servers to be active to reach quorum and thus make a ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-getting-started.html
MySQL Group Replication is provided as a plugin for the MySQL server; each server in a group requires configuration and installation of the plugin. This section provides a detailed tutorial with the steps required to create a replication group with ...In addition, InnoDB Cluster interfaces seamlessly with MySQL Router and simplifies deploying MySQL with high ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-data-definition-statements.html
In a Group Replication topology, care needs to be taken when executing data definition statements also commonly known as data definition language (DDL). Consequently, the lack of atomicity does not fit directly into the optimistic replication ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-usage-advice-and-limitations-of-distributed-recovery.html
It is based on classic asynchronous replication and as such it may be slow if the server joining the group is not provisioned at all or is provisioned with a very old backup image. As such, the recommendation is that before adding a server to the ...
https://dev.mysql.com/doc/refman/5.7/en/start-group-replication.html
If super_read_only=ON and the member should join as a primary, super_read_only is set to OFF once Group Replication successfully starts. A server that participates in a group in single-primary mode should use skip_replica_start=ON. Otherwise, the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-replication-technologies.html
Before getting into the details of MySQL Group Replication, this section introduces some background concepts and an overview of how things work. This provides some context to help understand what is required for Group Replication and what the ...
https://dev.mysql.com/doc/refman/5.7/en/audit-log-filter-definitions.html
For information about using JSON data in MySQL, see Section 11.5, “The JSON Data Type”. Filter definitions have this form, where actions indicates how filtering takes place: { "filter": actions } The following discussion describes permitted ...
https://dev.mysql.com/doc/refman/5.7/en/update.html
UPDATE is a DML statement that modifies rows in a table. Single-table syntax: UPDATE [LOW_PRIORITY] [IGNORE] table_reference SET assignment_list [WHERE where_condition] [ORDER BY ...] [LIMIT row_count] value: {expr | DEFAULT} assignment: col_name = ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-multi-primary-mode.html
Figure 17.6 Client Failover All servers are set to read-write mode when joining the group. In multi-primary mode, there is no notion of a single primary. There is no need to engage an election procedure because there is no server playing any ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-requirements-and-limitations.html
This section lists and explains the requirements and limitations of Group Replication.