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Answer: Create a read replica in a second Availability Zone. Enable Multi-AZ for the ElastiCache (Redis OSS) replication group.
For Amazon ElastiCache (Redis OSS), enabling Multi-AZ with a read replica in a different Availability Zone automatically detects primary node failures and promotes the replica to be the new primary. This significantly minimizes downtime and the recovery time objective (RTO), increasing overall resilience.
Author: Ritesh Yadav
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Question #33 A company uses Amazon ElastiCache (Redis OSS) to cache application data. A CloudOps engineer must implement a solution to increase the resilience of the cache. The solution also must minimize the recovery time objective (RTO). Which solution will meet these requirements?
A
Replace ElastiCache (Redis OSS) with ElastiCache (Memcached).
B
Create an Amazon EventBridge rule to initiate a backup every hour. Restore the backup when necessary.
C
Create a read replica in a second Availability Zone. Enable Multi-AZ for the ElastiCache (Redis OSS) replication group.
D
Enable automatic backups. Restore the backups when necessary.
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