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https://dev.mysql.com/doc/refman/8.0/en/range-optimization.html
The range access method uses a single index to retrieve a subset of table rows that are contained within one or several index value intervals. The following sections describe conditions under which the optimizer uses range access. Additionally, for ...
https://dev.mysql.com/doc/refman/8.0/en/replica-logs-status.html
A replica server creates two replication metadata repositories, the connection metadata repository and the applier metadata repository. If binary log file position based replication is in use, when the replica restarts, it reads the two ...
https://dev.mysql.com/doc/refman/8.0/en/replication-bugs.html
When you have determined that there is no user error involved, and replication still either does not work at all or is unstable, it is time to send us a bug report. We need to obtain as much information as possible from you to be able to track down ...
https://dev.mysql.com/doc/refman/8.0/en/replication-gtids-failover.html
There are a number of techniques when using MySQL Replication with Global Transaction Identifiers (GTIDs) for provisioning a new replica which can then be used for scaleout, being promoted to source as necessary for failover. Each identifier ...
https://dev.mysql.com/doc/refman/8.0/en/replication-multi-source.html
MySQL multi-source replication enables a replica to receive transactions from multiple immediate sources in parallel. In a multi-source replication topology, a replica creates a replication channel for each source that it should receive ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options-gtids.html
The MySQL Server system variables described in this section are used to monitor and control Global Transaction Identifiers (GTIDs). For additional information, see Section 19.1.3, “Replication with Global Transaction Identifiers”.
https://dev.mysql.com/doc/refman/8.0/en/replication-options-reference.html
The following two sections provide basic information about the MySQL command-line options and system variables applicable to replication and the binary log. Replication Options and Variables The command-line options and system variables in the ...
https://dev.mysql.com/doc/refman/8.0/en/replication-privilege-checks-gr.html
From MySQL 8.0.19, as well as securing asynchronous and semi-synchronous replication, you may choose to use a PRIVILEGE_CHECKS_USER account to secure the two replication applier threads used by Group Replication. The group_replication_applier ...
https://dev.mysql.com/doc/refman/8.0/en/replication-problems.html
If you have followed the instructions but your replication setup is not working, the first thing to do is check the error log for messages. Many users have lost time by not doing this soon enough after encountering problems. If you cannot tell from ...
https://dev.mysql.com/doc/refman/8.0/en/replication-rules-channel-based-filters.html
This section explains how to work with replication filters when multiple replication channels exist, for example in a multi-source replication topology. Before MySQL 8.0, all replication filters were global, so filters were applied to all ...