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High AvailabilityΒΆ

  • High Availability usually goes hand in hand with Horizontal scalability
  • High availability means running your application / system in at least 2 data centers (Availability Zone)
  • The goal of high availability is to survive a datacenter loss
  • The high availability can be passive (for AWS RDS Multi AZ for example)
  • The high availability can be active (for Horizontal scalability)