SOA-C03 · Question #108
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…
The correct answer is C. Create a read replica in a second Availability Zone. Enable Multi-AZ for the ElastiCache (Redis. Enabling Multi-AZ with automatic failover for ElastiCache for Redis provides high availability and the lowest possible RTO, as Redis automatically promotes a replica to primary if the primary node fails. This ensures near-instant recovery without manual intervention, unlike…
Question
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?
Options
- AReplace ElastiCache (Redis OSS) with ElastiCache (Memcached).
- BCreate an Amazon EventBridge rule to initiate a backup every hour. Restore the backup when
- CCreate a read replica in a second Availability Zone. Enable Multi-AZ for the ElastiCache (Redis
- DEnable automatic backups. Restore the backups when necessary.
How the community answered
(48 responses)- A4% (2)
- B6% (3)
- C79% (38)
- D10% (5)
Explanation
Enabling Multi-AZ with automatic failover for ElastiCache for Redis provides high availability and the lowest possible RTO, as Redis automatically promotes a replica to primary if the primary node fails. This ensures near-instant recovery without manual intervention, unlike backup-based solutions, which involve downtime and manual restores.
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