Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 656 discussion

Caching is primarily used for reducing latency, which is not the issue here. Read replicas are ideal solution here.

"must reduce the number of database reads"

A. Add Amazon RDS read replicas - Wrong. Because we have multiple RDS databases, will we create multiple read replicas each RDS database, how much replicas for each RDS database? C. Use Amazon Route 53 DNS caching - Wrong. We need cache data from user request but not DNS D. Use Amazon ElastiCache for Memcached - Wrong. Because we need high availability B. B. Use Amazon ElastiCache for Redis - Correct -> All queries were consolidate in multiple RED databases will be cache in ElasticCache for Redis and it provided high availability

Option A, "Add Amazon RDS read replicas," is the best solution to reduce the number of database reads while ensuring high availability. Option B, "Use Amazon ElastiCache for Redis," and option D, "Use Amazon ElastiCache for Memcached," are caching solutions that can help reduce the number of reads, but they do not provide high availability. So, option A is correct!

because providing better db read performance != reducing the number of reads

My money is on B.

"A solutions architect must reduce the number of database reads while ensuring high availability."!!!!

Its B .

I am torn between A & B... I would go with B, bc the ask is how to reduce number of reads to DB... with cashing less reads will go to DB

Caching is primarily used for reducing latency, which is not the issue here. Read replicas are ideal solution here.

B looks good

Its B.. Caching is best option here