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https://dev.mysql.com/doc/refman/9.7/en/thread-pool-tuning.html
This section provides guidelines on determining the best configuration for thread pool performance, as measured using a metric such as transactions per second. Of chief importance is the number of thread groups in the thread pool, which can be set ...
https://dev.mysql.com/doc/refman/9.7/en/server-system-variables.html
The MySQL server maintains many system variables that affect its operation. Most system variables can be set at server startup using options on the command line or in an option file. Most of them can be changed dynamically at runtime using the SET ...
https://dev.mysql.com/doc/refman/9.7/en/check-table.html
option: { FOR UPGRADE | QUICK | FAST | MEDIUM | EXTENDED | CHANGED } CHECK TABLE checks a table or tables for errors. CHECK TABLE can also check views for problems, such as tables that are referenced in the view definition that no longer exist. To ...
https://dev.mysql.com/doc/refman/9.7/en/clone-plugin-failure-handling.html
This section describes failure handing at different stages of a cloning operation. If a failure occurs during the prerequisite check, the CLONE INSTANCE operation reports an error. Concurrent DDL on the donor is blocked only if the clone_block_ddl ...
https://dev.mysql.com/doc/refman/9.7/en/clone-plugin-options-variables.html
This section describes the system variables that control operation of the clone plugin. If values specified at startup are incorrect, the clone plugin may fail to initialize properly and the server does not load it. In this case, the server may ...
https://dev.mysql.com/doc/refman/9.7/en/data-dictionary-information-schema.html
In particular, for each INFORMATION_SCHEMA table that is a view on data dictionary tables: The server no longer must create a temporary table for each query of the INFORMATION_SCHEMA table. When the underlying data dictionary tables store values ...
https://dev.mysql.com/doc/refman/9.7/en/data-dictionary-usage-differences.html
Use of a data dictionary-enabled MySQL server entails some operational differences compared to a server that does not have a data dictionary: Previously, enabling the innodb_read_only system variable prevented creating and dropping tables only for ...
https://dev.mysql.com/doc/refman/9.7/en/gone-away.html
This section also covers the related Lost connection to server during query error. The most common reason for the MySQL server has gone away error is that the server timed out and closed the connection. In this case, you normally get one of the ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-configuring-consistency-guarantees.html
Although the Transaction Synchronization Points section explains that conceptually there are two synchronization points from which you can choose: on read or on write, these terms were a simplification and the terms used in Group Replication are: ...
https://dev.mysql.com/doc/refman/9.7/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 ...