Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 416 discussion

To resolve the issue of slow page loads for a rapidly growing e-commerce website hosted on AWS, a solutions architect can take the following two actions: 1. Set up an Amazon CloudFront distribution 2. Create a read replica for the RDS DB instance Configuring an Amazon Redshift cluster is not relevant to this issue since Redshift is a data warehousing service and is typically used for the analytical processing of large amounts of data. Hosting the dynamic web content in Amazon S3 may not necessarily improve performance since S3 is an object storage service, not a web application server. While S3 can be used to host static web content, it may not be suitable for hosting dynamic web content since S3 doesn't support server-side scripting or processing. Configuring a Multi-AZ deployment for the RDS DB instance will improve high availability but may not necessarily improve performance.

Cloud Front and Read Replica

A - Redshift is for OLAP, not OLTP B - Caching, reduces page load time and server load C - S3 can't host dynamic (!) content D - Read Replica is meant for increasing DB performance E - Multi-AZ is meant for HA (not asked here)

The two options that will best help resolve the slow page loads are: B) Set up an Amazon CloudFront distribution and E) Configure a Multi-AZ deployment for the RDS DB instance Explanation: CloudFront can cache static content globally and improve latency for static content delivery. Multi-AZ RDS improves performance and availability of the database driving dynamic content.

BD is correct.

Resolve latency = Amazon CloudFront distribution and read replica for the RDS DB

B and D

The website’s users are experiencing slow page loads. To resolve this issue, a solutions architect should take the following two actions: Create a read replica for the RDS DB instance. This will help to offload read traffic from the primary database instance and improve performance.

Question asked about performance improvements, not HA. Cloudfront & Read Replica

slow page loads. >>> D

Read Replica will speed up Reads on RDS DB. E is wrong. It brings HA but doesn't contribute to speed which is impacted in this case. Multi-AZ is Active-Standby solution.

I agree with B & E. B. Set up an Amazon CloudFront distribution. (Amazon CloudFront is a content delivery network (CDN) service) E. Configure a Multi-AZ deployment for the RDS DB instance. (Good idea for loadbalance the DB workflow)

B and E ( as there is nothing mention about read transactions)

Cloudfront and Read Replica. We don't need HA here.

Amazon CloudFront can handle both static and Dynamic contents hence there is not need for option C l.e hosting the static data on Amazon S3. RDS read replica will reduce the amount of reads on the RDS hence leading a better performance. Multi-AZ is for disaster Recovery , which means D is also out.

CloudFont with S3

B and E