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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.