mysql Transaction

功力進步

https://xyz.cinc.biz/2013/05/mysql-transaction.html
https://stackoverflow.com/questions/30973002/try-catch-in-mysql-for-transaction

MyISAM to InnoDB

http://carlislebear.blogspot.com/2015/03/mysql-difference-between-MyISAM-and-InnoDB.html

資料庫分區
http://fecbob.pixnet.net/blog/post/39084675-說說mysql分區