You have an API server with millions of requests per day. Now to improve performance:
1
Horizontal expansion: Add a few more API servers to serve together.
Vertical expansion: Replace the API server with a better-performing machine.
Horizontal expansion is also called horizontal expansion, which uses more nodes to support a larger number of requests. For example, thousands of ants complete a handling task.
Vertical expansion is also called vertical expansion. The ability to expand a point supports larger requests. Such as using the ability of one person, such as Spider-Man, forcing the train to stop
2
Vertical expansion: improve the performance of a single hardware under the premise of the same number.
Horizontal expansion: improve the performance of the cluster by increasing the number.
When the hardware performance is relatively low, the vertical is cheaper than the horizontal 2T<2 1T
in the hardware performance is relatively high When the horizontal direction is cheaper than the vertical direction, 16T> 2 8T
