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https://dev.mysql.com/doc/refman/5.7/en/replication-features-memory.html
When a replication source server shuts down and restarts, its MEMORY tables become empty. To replicate this effect to replicas, the first time that the source uses a given MEMORY table after startup, it logs an event that notifies replicas that the ...
https://dev.mysql.com/doc/refman/5.7/en/replication-semisync-installation.html
Semisynchronous replication is implemented using plugins, so the plugins must be installed into the server to make them available. After a plugin has been installed, you control it by means of the system variables associated with it. These system ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-backups-read-only.html
Note The instructions in this section place the server to be backed up in a state that is safe for backup methods that get the data from the server, such as mysqldump (see Section 4.5.4, “mysqldump — A Database Backup Program”). You should not ...
https://dev.mysql.com/doc/refman/5.7/en/replication-solutions-scaleout.html
You can use replication as a scale-out solution; that is, where you want to split up the load of database queries across multiple database servers, within some reasonable limitations. Because replication works from the distribution of one source to ...
https://dev.mysql.com/doc/refman/5.7/en/resignal.html
RESIGNAL may change some or all information before passing it on. RESIGNAL is related to SIGNAL, but instead of originating a condition as SIGNAL does, RESIGNAL relays existing condition information, possibly after modifying it. RESIGNAL makes it ...
https://dev.mysql.com/doc/refman/5.7/en/revoke.html
The REVOKE statement enables system administrators to revoke privileges from MySQL accounts. For details on the levels at which privileges exist, the permissible priv_type, priv_level, and object_type values, and the syntax for specifying users and ...
https://dev.mysql.com/doc/refman/5.7/en/security-guidelines.html
MySQL uses security based on Access Control Lists (ACLs) for all connections, queries, and other operations that users can attempt to perform. Anyone using MySQL on a computer connected to the Internet should read this section to avoid the most ...
https://dev.mysql.com/doc/refman/5.7/en/select-benchmarking.html
BENCHMARK() is an excellent tool for finding out if some function is a problem for your queries. To measure the speed of a specific MySQL expression or function, invoke the BENCHMARK() function using the mysql client program. The return value is ...
https://dev.mysql.com/doc/refman/5.7/en/server-option-variable-reference.html
The following table lists all command-line options, system variables, and status variables applicable within mysqld. The table lists command-line options (Cmd-line), options valid in configuration files (Option file), server system variables ...
https://dev.mysql.com/doc/refman/5.7/en/server-shutdown.html
The server shutdown process takes place as follows: The shutdown process is initiated. For example, a user with the SHUTDOWN privilege can execute a mysqladmin shutdown command. Other operating system-specific shutdown initiation methods are ...