AWS Certified Developer Associate Practice Test 4

Correct answer - "Setup ElastiCache in front of RDS" : Amazon ElastiCache is an ideal front-end for data stores such as Amazon RDS, providing a high-performance middle tier for applications with extremely high request rates and/or low latency requirements.

"Setup RDS Read Replicas" - A replica continually syncs from the master database but its not suitable for an application where clients retrieve the same data over and over, this is where a cache system like ElastiCache helps

"Use Redshift" - It is optimized for datasets ranging from a few hundred gigabytes to a petabyte or more

"Switch your application code to AWS Lambda" - You will have to change code if you go with AWS Lambda however changing the code does not address the heavy load on the database and putting a front-end data store such as ElastiCache it is more of a fit solution

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