Once you have bottlenecked the vertical scaled server machine, you can consider to expand your application cluster to other machines, horizontalscale.
一旦您纵向伸缩的服务器受阻，可以考虑扩展您的应用程序群到其他机器，即横向的伸缩。
2
These vertical bars indicate my uncertainty in measurements of thickness and the horizontalscale, which is a logarithmic scale...
厚度的不确定度，由这些竖条表示，而水平刻度，则用对数刻度。
3
As SQL Azure currently has a limit of 50gb per instance to scale horizontally to larger sizes, one must employ this technique of horizontal partitioning to achieve application scale-out.