Vertical scaling by a factor N (N times more CPU power on the same machine) will give me N times more useful resources.,To solve a small CPU overload, on modern platforms, it is sometimes easier and faster to scale vertically.,It is more flexible to scale horizontally to handle future traffic growth.

Question

Your web application is doing great, your main server is starting to reach its limits in terms of CPU resources. You are wondering how to add resources. You are thinking about choosing between horizontal scaling (scale out) or vertical scaling (scale up).

Check the correct general principles to consider

Accepted Answer

Scaling vertically by a factor N (N times more CPU power on the same machine) will give me N times more useful resources.

Accepted Answer

To solve a small CPU overload, on modern platforms, it is sometimes easier and faster to scale vertically.

Accepted Answer

It is more flexible to scale horizontally to manage future traffic growth

Answer

Scaling horizontally by a factor N (N times more machines with the same CPU) will give me strictly N times more useful resources.

Answer

Scaling vertically requires managing a more complex synchronization between my resources.