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AWS Certified Developer - Associate · AWS
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
A) Eliminated - Decreasing the number of vCPUs will worsen performance. B) When your Lambda function wants to query the database, instead of opening a new connection every time (which is what causes "too many connections"), it talks to the RDS Proxy. For example, if 100 Lambda functions try to connect at the same time, instead of opening 100 database connections, the RDS Proxy might only open 10 and reuse them. C) Eliminated - It incurs unnecessary costs for increased capacity, even if the issue is caused by connection management.
B is the correct answer.
Amazon RDS Proxy is designed to handle a large number of simultaneous connections efficiently. It sits between your application and your RDS database to pool and share database connections, improving database efficiency and application scalability. This approach can reduce the number of connections to the database and handle unpredictable peak loads more effectively.