mysql 常用的几个网址

org
https://www.mysql.com/
https://www.mysql.com/downloads/
https://www.mysql.com/cn/products/community/

org doc
https://dev.mysql.com/doc/
https://dev.mysql.com/doc/refman/5.5/en/
https://dev.mysql.com/doc/refman/5.6/en/
https://dev.mysql.com/doc/refman/5.7/en/
https://dev.mysql.com/doc/refman/8.0/en/

percona
https://www.percona.com
https://www.percona.com/software/mysql-database
https://www.percona.com/downloads/XtraBackup/LATEST/
https://www.percona.com/doc/percona-xtrabackup/LATEST/index.html

other
https://www.oschina.net/translate/tag/mysql