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AWS Multi-AZ, RDS Proxy, and Secrets Manager Combo Meets Strict RTO/RPO Targets

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A technical implementation demonstrates how a critical financial application running on Amazon RDS for PostgreSQL can achieve a 1-second RPO and 60-second RTO using Multi-AZ deployment with a synchronous standby replica. RDS Proxy is placed between the application and the database to prevent connection drops during failover, keeping the application online while the Proxy internally reroutes traffic to the new primary. AWS Secrets Manager, paired with a managed Lambda rotation function, handles database credential rotation every 30 days without causing application downtime by using staging labels to transition passwords smoothly. The setup requires specific IAM permissions for Terraform execution, and RDS Proxy only supports db.t3.medium instances or higher. Together, these three AWS services address high availability and secure credential management as independent but complementary solutions.

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AWS Multi-AZ, RDS Proxy, and Secrets Manager Combo Meets Strict RTO/RPO Targets · ShortSingh