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Question 405

A company needs to implement a disaster recovery (DR) plan for a web application. The application runs in a single AWS Region.

The application uses microservices that run in containers. The containers are hosted on AWS Fargate in Amazon Elastic Container Service (Amazon ECS). The application has an Amazon RDS for MySQL DB instance as its data layer and uses Amazon Route 53 for DNS resolution. An Amazon CloudWatch alarm invokes an Amazon EventBridge rule if the application experiences a failure.

A solutions architect must design a DR solution to provide application recovery to a separate Region. The solution must minimize the time that is necessary to recover from a failure.

Which solution will meet these requirements?

Setup a second ECS cluster and ECS service on Fargate in the separate Region. Create an AWS Lambda function to perform the following actions: take a snapshot of the RDS DB instance, copy the snapshot to the separate Region, create a new RDS DB instance from the snapshot, and update Route 53 to route traffic to the second ECS cluster. Update the EventBridge rule to add a target that will invoke the Lambda function.

Create an AWS Lambda function that creates a second ECS cluster and ECS service in the separate Region. Configure the Lambda function to perform the following actions: take a snapshot of the RDS DB instance, copy the snapshot to the separate Region, create a new RDS DB instance from the snapshot, and update Route 53 to route traffic to the second ECS cluster. Update the EventBridge rule to add a target that will invoke the Lambda function.

Setup a second ECS cluster and ECS service on Fargate in the separate Region. Create a cross-Region read replica of the RDS DB instance in the separate Region. Create an AWS Lambda function to promote the read replica to the primary database. Configure the Lambda function to update Route 53 to route traffic to the second ECS cluster. Update the EventBridge rule to add a target that will invoke the Lambda function.

Setup a second ECS cluster and ECS service on Fargate in the separate Region. Take a snapshot of the RDS DB instance. Convert the snapshot to an Amazon DynamoDB global table. Create an AWS Lambda function to update Route 53 to route traffic to the second ECS cluster. Update the EventBridge rule to add a target that will invoke the Lambda function.

Correct Answer: C

The best solution to minimize recovery time involves setting up a second ECS cluster and ECS service on Fargate in the separate Region and using a cross-Region read replica of the RDS DB instance. In the event of a failure, the read replica can quickly be promoted to the primary database, ensuring minimal downtime. The solution should also include an AWS Lambda function to promote the read replica to the primary database and update Route 53 to route traffic to the second ECS cluster. Updating the EventBridge rule to invoke the Lambda function ensures automatic failover when a failure is detected.

Discussion

shaaam80Option: C

Answer C. Configure RDS read-replica instead of Snapshots. Invoke Lambda function to promote read-replica to primary and update Route53 to point to secondary region incase of DR

_Juwon

C. read replica

GabrielDeBiasiOption: C

Answer c

salazar35Option: C

The solution must minimize the time that is necessary to recover from a failure

gfhbox0083

C, for sure. It's not straight forward to Convert the RDS MySQL snapshot to an Amazon DynamoDB global table.

career360guruOption: C

Option C

career360guruOption: C

Option C

thalaOption: C

Second ECS Cluster and RDS Read Replica with Lambda

devalenzuela86Option: C

Answer c

cypkirOption: C

Answer: C