Horizontal/Vertical Scaling

Horizontal scaling is a change in the number of a resource. For example, increasing the number of virtual machines processing messages in a queue. Vertical scaling is a change in the size/power of a resource. For example, increasing the memory or disk space available to a machine. Scaling can be applied to databases, cloud resources, and other areas of computing.

Visit the following resources to learn more:

• Horizontal vs Vertical Scaling
• Scaling In Databases
• System Design Basics: Horizontal vs. Vertical Scaling
• System Design 101