Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 376 discussion

database connection rejection errors = RDS Proxy

RDS Proxy provides a proxy layer that pools and shares database connections to improve scalability. This allows the proxy to handle connection spikes to the database gracefully. Using RDS Proxy requires minimal operational overhead - just create the proxy and reconfigure applications to use it. No code changes needed.

Wait, why not B?????

To reduce application failures resulting from database connection timeouts, the best solution is to enable RDS Proxy on the RDS DB instances

Many applications, including those built on modern serverless architectures, can have a large number of open connections to the database server and may open and close database connections at a high rate, exhausting database memory and compute resources. Amazon RDS Proxy allows applications to pool and share connections established with the database, improving database efficiency and application scalability. (https://aws.amazon.com/pt/rds/proxy/)

The correct solution for this scenario would be to create a proxy in RDS Proxy. RDS Proxy allows for managing thousands of concurrent database connections, which can help reduce connection errors. RDS Proxy also provides features such as connection pooling, read/write splitting, and retries. This solution requires the least operational overhead as it does not involve migrating to a different instance class or setting up a new cache layer. Therefore, option A is the correct answer.