MySQL 8 Administrator???s Guide

The SET PERSIST variant

Server variables can be configured globally and dynamically while the server is running. There are numerous system variables that we can set using SET GLOBAL:

SET GLOBAL max_connections = 1000;

However, such settings will be lost after server restart. To avoid this, MySQL 8 has introduced the SET PERSIST variant, which preserves variables across a server restart:

SET PERSIST max_connections = 1000;