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Exam AWS Certified Database - Specialty topic 1 question 341 discussion

Exam question from Amazon's AWS Certified Database - Specialty
Question #: 341
Topic #: 1
[All AWS Certified Database - Specialty Questions]

A large financial services company uses Amazon ElastiCache for Redis for its new application that has a global user base. A database administrator must develop a caching solution that will be available across AWS Regions and include low-latency replication and failover capabilities for disaster recovery (DR). The company's security team requires the encryption of cross-Region data transfers.

Which solution meets these requirements with the LEAST amount of operational effort?

  • A. Enable cluster mode in ElastiCache for Redis. Then create multiple clusters across Regions and replicate the cache data by using AWS Database Migration Service (AWS DMS). Promote a cluster in the failover Region to handle production traffic when DR is required.
  • B. Create a global datastore in ElastiCache for Redis. Then create replica clusters in two other Regions. Promote one of the replica clusters as primary when DR is required.
  • C. Disable cluster mode in ElastiCache for Redis. Then create multiple replication groups across Regions and replicate the cache data by using AWS Database Migration Service (AWS DMS). Promote a replication group in the failover Region to primary when DR is required.
  • D. Create a snapshot of ElastiCache for Redis in the primary Region and copy it to the failover Region. Use the snapshot to restore the cluster from the failover Region when DR is required.
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Suggested Answer: B 🗳️

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Skarlex77
1 year, 5 months ago
Selected Answer: B
For sure B
upvoted 1 times
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MultiAZ
1 year, 5 months ago
Selected Answer: B
B Elasticache Global DataStore allows for one master and two read replica regions, and manual failover in case of disaster. RPO <1sec and RTO <1 min
upvoted 2 times
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Ram_xyz
1 year, 7 months ago
Selected Answer: B
https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/Redis-Global-Datastore.html
upvoted 4 times
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marll88
1 year, 7 months ago
I think B. In the unlikely event of regional degradation, one of the healthy cross-region replica clusters can be promoted to become the primary cluster with full read/write capabilities. Once initiated, the promotion typically completes in less than a minute, allowing your applications to remain available. https://aws.amazon.com/about-aws/whats-new/2020/03/amazon-elasticache-for-redis-announces-global-datastore/
upvoted 3 times
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