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https://dev.mysql.com/doc/refman/8.0/en/faqs-general.html
If the database is I/O-bound (indicated by CPU consumption less than capacity), adding more CPUs is futile. If the database is partitioned into an I/O-bound part and a CPU-bond part, adding CPUs may still be useful. The InnoDB storage engine offers ...The MySQL 9 Innovation series began with the MySQL 9.0.0 release on 01 July ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-thread-pool.html
By contrast, the Thread Pool operates on the MySQL server side and is designed to manage the execution of inbound concurrent connections and queries as they are received from the client connections accessing the back-end MySQL database. If this ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-performance.html
There are query performance issues due to sequential access to the NDB storage engine; it is also relatively more expensive to do many range scans than it is with either MyISAM or InnoDB. The following performance issues are specific to or ...See ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-relational-tables.html
The examples in this section use InnoDB tables in the world_x schema. See Section 22.3.2, “Download and Import world_x Database” for instructions on setting up the world_x schema sample. Confirm the Schema To show the schema that is assigned to ... You can also use X DevAPI to work with relational ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-relational-tables.html
The examples in this section use InnoDB tables in the world_x schema. See Section 22.4.2, “Download and Import world_x Database” for instructions on setting up the world_x schema sample. Confirm the Schema To show the schema that is assigned to ... You can also use X DevAPI to work with relational ...
https://dev.mysql.com/doc/refman/8.0/en/replica-logs.html
The replica's connection metadata repository contains information that the replication receiver thread needs to connect to the replication source server and retrieve transactions from the source's binary log. The replica's applier metadata ... A ...
https://dev.mysql.com/doc/refman/8.0/en/thread-pool.html
The default thread-handling model in MySQL Server executes statements using one thread per client connection. As more clients connect to the server and execute statements, overall performance degrades. The thread pool plugin provides an alternative ... Note MySQL Enterprise Thread Pool is an extension included in MySQL Enterprise Edition, a commercial ...
https://dev.mysql.com/doc/refman/8.0/en/activestate-perl.html
If you cannot get the procedure to work, you should install the ODBC driver instead and connect to the MySQL server through ODBC: use DBI; $dbh= DBI->connect("DBI:ODBC:$dsn",$user,$password) || die "Got error $DBI::errstr when connecting to $dsn\n"; ... On Windows, you should do the following to install the MySQL DBD module with ActiveState Perl: Get ActiveState Perl from http://www.activestate.com/Products/ActivePerl/ and install ...
https://dev.mysql.com/doc/refman/8.0/en/alter-resource-group.html
The attributes for CPU affinity, priority, and whether the group is enabled can be modified with ALTER RESOURCE GROUP. These attributes are specified the same way as described for CREATE RESOURCE GROUP (see Section 15.7.2.2, “CREATE RESOURCE GROUP ... ALTER RESOURCE GROUP group_name [VCPU [=] vcpu_spec [, vcpu_spec] ...] [THREAD_PRIORITY [=] N] [ENABLE|DISABLE [FORCE]] vcpu_spec: {N | M - N} ALTER RESOURCE GROUP is used for resource group management (see Section 7.1.16, “Resource ...
https://dev.mysql.com/doc/refman/8.0/en/case.html
If no when_value or search_condition matches the value tested and the CASE statement contains no ELSE clause, a Case not found for CASE statement error results. CASE case_value WHEN when_value THEN statement_list [WHEN when_value THEN ...This ...