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https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure-partition.html
You can use the group_replication_autorejoin_tries system variable, which is available from MySQL 8.0.16, to make the member automatically try to rejoin the group at this point. Consider the following points when deciding whether or not to set an ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-change-buffer.html
The Information Schema INNODB_METRICS table provides most of the data points found in InnoDB Standard Monitor output plus other data points. The change buffer is a special data structure that caches changes to secondary index pages when those pages ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-consistent-read.html
A consistent read means that InnoDB uses multi-versioning to present to a query a snapshot of the database at a point in time. The query sees the changes made by transactions that committed before that point in time, and no changes made by later or ...The exception to this rule is that the query sees the changes made by earlier statements within the same ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-fulltext-index.html
This process, even for small documents, can result in numerous small insertions into the auxiliary index tables, making concurrent access to these tables a point of contention. InnoDB Full-Text Index Deletion Handling Deleting a record that has a ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-locks-set.html
At this point, sessions 2 and 3 deadlock: Neither can acquire an exclusive lock for the row because of the shared lock held by the other. At this point, sessions 2 and 3 deadlock: Neither can acquire an exclusive lock for the row because of the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-porting-mysql.html
Consider these aspects of memcached applications when adapting an existing MySQL schema or application to use the daemon_memcached plugin: memcached keys cannot contain spaces or newlines, because these characters are used as separators in the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-multi-versioning.html
The roll pointer points to an undo log record written to the rollback segment. Records in a clustered index are updated in-place, and their hidden system columns point undo log entries from which earlier versions of records can be reconstructed. It ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-midpoint_insertion.html
This arrangement divides the LRU list into two segments, where the pages downstream of the insertion point are considered “old” and are desirable victims for LRU eviction. You can control the insertion point in the LRU list and choose whether ...
https://dev.mysql.com/doc/refman/8.0/en/installing.html
A bugfix track upgrade includes point releases, such as MySQL 8.4.x upgrading to 8.4.y, while innovation track releases typically only have minor releases, such as MySQL 9.4.0 upgrading to 9.5.0. A summary of the procedure follows and later sections ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-encrypted-file-component.html
Important In MySQL 8.0.29 and later, it is not possible for this path to point to the MySQL data directory. Important In MySQL 8.0.29 and later, it is not possible for this path to point to the MySQL data directory. Note ...