Business Summary: Deploying Aurora as a Global Cross-Region Database

This recipe outlines the benefits of deploying Amazon Aurora PostgreSQL as a globally distributed database with cross-region failover and graceful application fallback capabilities. This approach strengthens database resilience and ensures high availability for your critical workloads.

Benefits of Global Aurora Postgres        

●?????Enhanced Disaster Recovery: Achieve automatic failover to a replica in a separate AWS region during a disaster event. This minimises downtime and ensures business continuity. ( https://aws.amazon.com/resilience/ )

●?????Improved Availability: Utilise read replicas in different regions for geographically distributed deployments. This reduces latency for geographically dispersed users. ( https://aws.amazon.com/about-aws/global-infrastructure/regions_az/ )

●?????Scalability: Independently scale compute and storage resources in each region for optimal performance based on regional traffic patterns. ( https://aws.amazon.com/rds/aurora/features/ )

Implementation Approach        

●?????Cell-Based Architecture: Implement a cell-based architecture, where each cell (region) has a fully functional Aurora Postgres instance with read replicas for local access. This allows for independent scaling and failover within each cell. ( https://aws.amazon.com/solutions/guidance/cell-based-architecture-on-aws/ )

●?????Global Failover and Failback: Configure cross-region replication between primary databases for automatic failover to the secondary in the event of a regional outage. Implement in your application stack an automated failback mechanisms for a smooth transition back to the primary region once the outage resolves. (Ref: https://aws.amazon.com/blogs/database/cross-region-disaster-recovery-using-amazon-aurora-global-database-for-amazon-aurora-postgresql/)

●?????Monitoring and Automation: Utilise Amazon CloudWatch for continuous monitoring of database performance and health in all regions. Automate failover and failback processes for faster recovery times.

Business Value        

●?????Reduced Downtime: Minimise service disruptions caused by regional outages through automatic failover.

●?????Improved User Experience: Ensure low latency for users by utilising geographically distributed read replicas.

●?????Increased Scalability: Scale your database independently across regions to meet growing demands.

●?????Enhanced Business Continuity: Strengthen your disaster recovery strategy with automatic failover and failback capabilities.

Next Steps        

●?????Conduct a thorough cost-benefit analysis to determine the optimal solution for your specific needs.

●?????Partner with AWS professional services to design and implement the optimal global Aurora Database and Application stack architectures.

By deploying Aurora as a globally distributed database, you gain a robust and scalable solution for running your critical applications. This approach provides exceptional high availability, disaster recovery capabilities, and an improved user experience, ultimately driving business value and continuity.