A company has implemented a website on AWS. The database backend is hosted on Amazon RDS for MySQL with one primary instance, and five read replicas to support scaling requirements. Read replicas should not be delayed for more than 1 second from the primary instance to support the user experience; as website traffic continues to increase, replicas lag further behind for peak periods, leading to user complaints when searches return inconsistent results. A solution architect must keep replication time to a minimum, with minimal changes to application code or operational requirements. Which solution meets these requirements?