这是学习笔记的第1834篇文章之前总结了一篇扩缩容的初步设计，我们来做第二篇。MySQL分布式架构扩缩容的初步设计(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fmp.weixin.qq.com%2Fs%3F__biz%3DMjM5ODEzNDA4OA%3D%3D