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.
Explanations:
While this option describes creating a second ECS cluster and updating Route 53, it does not include a mechanism for continuous replication or quick recovery of the RDS database. Copying a snapshot is not as quick as having a read replica ready to promote.
This option suggests creating a second ECS cluster via a Lambda function, which is unnecessary and adds complexity. It still relies on snapshotting for the RDS instance, lacking a quicker recovery mechanism like a read replica.
This option establishes a second ECS cluster and utilizes a cross-Region read replica for the RDS instance, allowing for quick promotion to primary upon failure. This minimizes downtime and provides a more efficient recovery process.
This option incorrectly suggests converting an RDS snapshot to a DynamoDB global table, which is not a viable approach for MySQL databases. It does not provide a proper mechanism for application-level recovery and relies on an unsuitable database solution.
I map out that the answer is:
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.