About This Architecture

Highly available database tier on AWS: a VPC spans two availability zones with application servers in both AZs behind an ALB, a primary RDS instance in AZ-a and a synchronous standby in AZ-b, and the automatic failover path shown between primary and standby. Each AZ is grouped.

AWS Multi-AZ RDS Failover

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Created by

July 2, 2026

Updated

August 18, 2026 at 2:42 PM

Type

architecture

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