Magento 数据库主从关系的设置 Magento master-slave
Magento 数据库主从关系的设置参考帖子：
- https://yq.aliyun.com/articles/132883/
- https://blog.csdn.net/terry_water/article/details/17711055
- https://marketplace.webkul.com/magento-with-mysql-master-slave-architecture/
- https://www.sonassi.com/blog/magento-kb/magento-mysql-replication
- http://vinayazm.blogspot.com/2015/09/magento-with-mysql-master-slave.html