Exam AWS Certified Cloud Practitioner topic 1 question 323 discussion

C. Amazon ElastiCache is a caching service that can be used to improve database performance by reducing the amount of read I/O on the database. By caching frequently accessed data in-memory, ElastiCache reduces the number of read operations that are sent to the database, thus improving the overall performance of the database. Amazon DynamoDB Accelerator (DAX) is also a caching service, but it is designed for Amazon DynamoDB, not Amazon RDS. Amazon EMR is a big data processing service, and Amazon Redshift is a data warehousing service, neither of which are specifically designed to improve the performance of an Amazon RDS database.

Amazon ElastiCache is an AWS service that provides in-memory data caching. It can be used to improve the performance of I/O intensive applications, including databases like Amazon RDS, by reducing the load on the database backend. ElastiCache supports popular caching engines like Redis and Memcached. By caching frequently accessed data in-memory, ElastiCache can significantly reduce the database load and improve overall application performance.

C. Amazon ElastiCache "Amazon ElastiCache improves the performance of web applications by allowing you to retrieve information from a fast, managed, in-memory system, instead of relying entirely on slower disk-based databases." https://aws.amazon.com/elasticache/faqs/

Amazon ElastiCache is an in-memory data store that is designed to improve the performance of web applications and other I/O intensive workloads. By using ElastiCache, the company can reduce the number of read requests to the Amazon RDS database, thereby improving its performance.

no doubts

C is the answer.

by elimination

Answer C - Elasticache. Link: https://aws.amazon.com/elasticache/faqs/