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https://dev.mysql.com/doc/refman/8.0/en/group-replication-frequently-asked-questions.html
What is the maximum number of MySQL servers in a group? A group can consist of maximum 9 servers. Attempting to add another server to a group with 9 members causes the request to join to be refused. This limit has been identified from testing and ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-functions.html
The functions described in the following sections are used with Group Replication.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-online-upgrade-combining-versions.html
Group Replication is versioned according to the MySQL Server version that the Group Replication plugin was bundled with. For example, if a member is running MySQL 5.7.26 then that is the version of the Group Replication plugin. For optimal ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-replication-failover.html
In the event that the primary Cluster replication process fails, it is possible to switch over to the secondary replication channel. This means that the ndb_apply_status table contains information for the replica on this host as well as for any ...
https://dev.mysql.com/doc/refman/8.0/en/replication-functions-async-failover.html
The following functions, which are available from MySQL 8.0.22 for standard source to replica replication and from MySQL 8.0.23 for Group Replication, enable you to add and remove replication source servers from the source list for a replication ...
https://dev.mysql.com/doc/refman/8.0/en/replication-functions.html
The functions described in the following sections are used with MySQL Replication. GTID_SUBTRACT() Return all GTIDs in set that are not in subset. MASTER_POS_WAIT() Block until the replica has read and applied all updates up to the specified ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-operations-per-fragment.html
Since NDB does not use single-key access for ordered indexes, the counts for tot_key_reads, tot_key_inserts, tot_key_updates, tot_key_writes, and tot_key_deletes are not incremented by ordered index operations. Note When using tot_key_writes, you ...
https://dev.mysql.com/doc/refman/8.0/en/sql-mode.html
Setting the SQL Mode The Most Important SQL Modes Full List of SQL Modes Combination SQL Modes Strict SQL Mode Comparison of the IGNORE Keyword and Strict SQL Mode For answers to questions often asked about server SQL modes in MySQL, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-internals.html
In this case, if memcached cannot find a key in memory, it searches for the value in an InnoDB table. For example, if you define col1, col2 as value columns, and you define | as the separator, you can issue the following memcached command to insert ... InnoDB API for the InnoDB memcached Plugin The InnoDB memcached engine accesses InnoDB through InnoDB APIs, most of which are directly adopted from embedded ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-statistics-table.html
For ANALYZE TABLE operations that update the key distribution, failure may occur even if the operation updates the table itself (for example, if it is a MyISAM table). If the index is the primary key, the name is always PRIMARY. EXPRESSION MySQL ...