New features introduced in 8.0

mysql> set persist innodb_buffer_pool_size=2048*1024*1024;Query OK, 0 rows affected (0.01 sec)mysql> show variables like 'innodb_buffer_pool_size';+-------------------------+------------+| Variable_name           | Value      |+-------------------------+------------+| innodb_buffer_pool_size | 2147483648 |+-------------------------+------------+1 row in set (0.00 sec)mysql> set persist innodb_buffer_pool_size=4096*1024*1024;Query OK, 0 rows affected (0.01 sec)mysql> show variables like 'innodb_buffer_pool_size';+-------------------------+------------+| Variable_name           | Value      |+-------------------------+------------+| innodb_buffer_pool_size | 4294967296 |+-------------------------+------------+1 row in set (0.00 sec)mysql> [root@roidb3 data]# pwd/zxdata/my3311/data[root@roidb3 data]# ls -l mysqld-auto.cnf -rw-r-----. 1 mysql mysql 186 Dec 24 08:59 mysqld-auto.cnf[root@roidb3 data]# more mysqld-auto.cnf { "Version" : 1 , "mysql_server" : { "innodb_buffer_pool_size" : { "Value" : "4294967296" , "Metadata" : { "Timestamp" : 1577149148131600 , "User" : "root" , "Host" : "localhost" } } } }[root@roidb3 data]# 持久化参数直接写入到mysqld-auto.cnf文件中。具体内容看官方文档。