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https://dev.mysql.com/doc/refman/5.7/en/information-schema-connection-control-table-reference.html
Table 24.9 INFORMATION_SCHEMA Connection Control Tables Table Name Description Introduced CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS Current number of consecutive failed connection attempts per account 5.7.17 .
https://dev.mysql.com/doc/refman/5.7/en/information-schema-firewall-table-reference.html
Table 24.10 INFORMATION_SCHEMA Firewall Tables Table Name Description MYSQL_FIREWALL_USERS Firewall in-memory data for account profiles MYSQL_FIREWALL_WHITELIST Firewall in-memory data for account profile allowlists .
https://dev.mysql.com/doc/refman/5.7/en/information-schema-thread-pool-table-reference.html
Table 24.7 INFORMATION_SCHEMA Thread Pool Tables Table Name Description TP_THREAD_GROUP_STATE Thread pool thread group states TP_THREAD_GROUP_STATS Thread pool thread group statistics TP_THREAD_STATE Thread pool thread information .
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-table-fragments.html
The table_fragments table provides information about the fragmentation, partitioning, distribution, and (internal) replication of NDB tables.
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-table-replicas.html
The table_replicas table provides information about the copying, distribution, and checkpointing of NDB table fragments and fragment replicas.
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-many-tables.html
If you have configured non-persistent optimizer statistics (a non-default configuration), InnoDB computes index cardinality values for a table the first time that table is accessed after startup, instead of storing such values in the table. This ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-memory-tables.html
Consider using MEMORY tables for noncritical data that is accessed often, and is read-only or rarely updated. Benchmark your application against equivalent InnoDB or MyISAM tables under a realistic workload, to confirm that any additional ...On the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-applier-configuration-table.html
This table shows the configuration parameters that affect transactions applied by the replica. Parameters stored in the table can be changed at runtime with the CHANGE MASTER TO statement, as indicated in the column descriptions. The ...There is ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-connection-status-table.html
This table shows the current status of the replication I/O thread that handles the replica's connection to the source. The replication_connection_status table has these columns: CHANNEL_NAME The replication channel which this row is displaying. The ...It contains values that change during the connection, whereas replication_connection_configuration contains values which define how the replica connects to the source and that remain constant during the ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-session-account-connect-attrs-table.html
For descriptions of common attributes, see Section 25.12.9, “Performance Schema Connection Attribute Tables”. The session_account_connect_attrs table contains connection attributes only for the current session, and other sessions associated with ... Application programs can provide key-value connection attributes to be passed to the server at connect ...