Topic 1 Question 574

AWS Certified Solutions Architect - Associate

Topic 1 Question 574
A financial services company launched a new application that uses an Amazon RDS for MySQL database. The company uses the application to track stock market trends. The company needs to operate the application for only 2 hours at the end of each week. The company needs to optimize the cost of running the database.

Which solution will meet these requirements MOST cost-effectively?
- Migrate the existing RDS for MySQL database to an Aurora Serverless v2 MySQL database cluster.
- Migrate the existing RDS for MySQL database to an Aurora MySQL database cluster.
- Migrate the existing RDS for MySQL database to an Amazon EC2 instance that runs MySQL. Purchase an instance reservation for the EC2 instance.
- Migrate the existing RDS for MySQL database to an Amazon Elastic Container Service (Amazon ECS) cluster that uses MySQL container images to run tasks.
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- 正解だと思う選択肢: A
  The key reasons are:
  
  Aurora Serverless v2 scales compute capacity automatically based on actual usage, down to zero when not in use. This minimizes costs for intermittent usage. Since it only runs for 2 hours per week, the application is ideal for a serverless architecture like Aurora Serverless. Aurora Serverless v2 charges per second when the database is active, unlike RDS which charges hourly. Aurora Serverless provides higher availability than self-managed MySQL on EC2 or ECS. Using reserved EC2 instances or ECS still incurs charges when not in use versus the fine-grained scaling of serverless. Standard Aurora clusters have a minimum capacity unlike the auto-scaling serverless architecture.
  
  👍 4
  Guru4Cloud2023/08/21
- 正解だと思う選択肢: B
  B seems to be the correct answer, because if we have a predictable workload Aurora database seems to be most cost effective however if we have unpredictable workload aurora serverless seems to be more cost effective because our database will scale up and down
  
  for more informations please read this article https://medium.com/trackit/aurora-or-aurora-serverless-v2-which-is-more-cost-effective-bcd12e172dcf
  
  👍 3
  mrsoa2023/08/03
- 正解だと思う選択肢: A
  2 hours per week = Serverless = A. Recommended for "infrequent, intermittent, or unpredictable workloads"
  
  👍 3
  pentium752024/01/01
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