问题：
I have come across many NoSQL databases and SQL databases. 我遇到过许多NoSQL数据库和SQL数据库。 There are varying parameters to measure the strength and weaknesses of these databases and scalability is one of them. 有各种参数可以衡量这些数据库的优缺点，而可伸缩性就是其中之一。 What is the difference between horizontally and vertically scaling these databases? 水平和垂直缩放这些数据库有什么区别？
解决方案：
参考一： https://stackoom.com/question/n7kl/数据库水平和垂直缩放之间的差异参考二： https://oldbug.net/q/n7kl/Difference-between-scaling-horizontally-and-vertically-for-databases
来源：oschina
链接：https://my.oschina.net/u/4428122/blog/4358760