Topic 1 Question 376

AWS Certified Solutions Architect - Associate

Topic 1 Question 376
A company has launched an Amazon RDS for MySQL DB instance. Most of the connections to the database come from serverless applications. Application traffic to the database changes significantly at random intervals. At times of high demand, users report that their applications experience database connection rejection errors.

Which solution will resolve this issue with the LEAST operational overhead?
- Create a proxy in RDS Proxy. Configure the users’ applications to use the DB instance through RDS Proxy.
- Deploy Amazon ElastiCache for Memcached between the users’ applications and the DB instance.
- Migrate the DB instance to a different instance class that has higher I/O capacity. Configure the users’ applications to use the new DB instance.
- Configure Multi-AZ for the DB instance. Configure the users’ applications to switch between the DB instances.
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- 正解だと思う選択肢: A
  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.
  
  👍 4
  ktulu26022023/03/11
- 正解だと思う選択肢: A
  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/)
  
  👍 3
  COTIT2023/03/17
- To reduce application failures resulting from database connection timeouts, the best solution is to enable RDS Proxy on the RDS DB instances
  
  👍 1
  roxx5292023/05/22
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