1, innodb_ buffer_ pool _size default 128M, 50% -70%, it recommended physical memory;
2,1og_ timestamps default UTC, recommendations SYSTEM;
3, time_ zone default SYSTEM, recommended "+8: 00";
4, join_ _buffer_ size default 2K, recommendations 4M;
5, sort_ _buffer_ size default 2K, recommendations 4M;
6, read_ rnd_ _buffer_ size default 2K, recommendations 4M;
7, max_ connections 151 default recommended set according to actual situation;
8, max_ connect_ errors default 100, recommendations 100 000;
9, max_ allowed_ packet default 4M, recommendations 32M;
. 10, interactive timeout default 28800, recommended 300 seconds;
11, wait_ timeout default 28800, recommended 300 seconds;
12, lock_ wait_timeout default - a year, the proposed six seconds;
13, long_ query_time default 10 seconds, 0.1 to 0.5 is recommended;
14, binlog_cache_ size default 32K, recommendations 32M;
15, max_binlog_ cache_ size default very, very large, it is recommended 1G;
16, innodb_ log_ file_ size default 48M, recommends 1 ~ 2G;
17, innodb_ log_ files_ in_ group default 2, 3 or more is recommended groups;
18, innodb_ io_capacity default is 200, set according to actual io disk capacity;
19, innodb_ open_ files default -1, no limit, it is recommended 65535;
20, innodb_max_ dirty_ pages_ pct default 75, recommendation 50;
21, innodb_ online_ alter_ log_ max_ _size a default 128M, recommendations 4G;
22, innodb_undo_ log truncate off by default, it is recommended to open;
More reliable MySQL parameters recommended value, see: https: //imysql.com/my-cnf-wizard.html
