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AWS Certified Solutions Architect - Professional · AWS
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Aurora Auto Scaling for Replicas is valid and helps scale read-heavy workloads. Sticky sessions are needed since the application is stateful. Application Load Balancer supports both round robin and sticky sessions. This ensures horizontal scaling of the app tier while maintaining a consistent user experience.
Enable Aurora Auto Scaling for Aurora Replicas. Use an Application Load Balancer with the round robin routing and sticky sessions enabled
C is correct. This solution will provide a consistent user experience by using an Application Load Balancer with the round robin routing algorithm and sticky sessions enabled. This allows the application and database tiers to scale by using Aurora Auto Scaling for Aurora Replicas. This will ensure that the application is able to handle the increased user base while maintaining a consistent user experience. The use of an Application Load Balancer also allows for better routing of traffic to the available Aurora Replicas.