Explanation:
Amazon RDS Proxy is a highly available database proxy that manages and pools connections to relational databases. During a failover event, RDS Proxy automatically routes traffic to the newly promoted primary instance while maintaining connections from the application's perspective. This dramatically reduces application downtime and connection errors without requiring changes to the application's code.
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Question 34 A company has an application that uses an Amazon RDS for MariaDB Multi-AZ database. The application becomes unavailable for several minutes every time the database experiences a failover during a planned maintenance event. What should a SysOps administrator do to reduce the downtime of the application during failover?
A
Create an RDS for MariaDB DB cluster that has multiple writer instances. Configure the application to retry failed queries on another primary node during maintenance events.
B
Configure the RDS maintenance window settings to pool connections while a failover is in process.
C
Configure an Amazon ElastiCache write-through cache for the database. Configure the application to connect to the cache instead of directly to the database.
D
Create an RDS proxy that is associated with the database. Configure the application to connect to the proxy instead of directly to the database.
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