Resource Scaling

Vertical Scaling

• Adding more power to existing machine (RAM, CPU, Storage, etc).

• Sacrificing availability of the service because adding resource to existing machine need the machine to be shutdown first.

Horizontal Scaling

• Adding more machine to the pool of services.

• Keeping the service availability, no need to shutdown the machine first.

• Easy to do with virtual environment like Docker.

• Service orchestration can be handled by Kubernetes.