Exam AWS Certified Database - Specialty All Questions

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Exam AWS Certified Database - Specialty topic 1 question 217 discussion

Exam question from Amazon's AWS Certified Database - Specialty

Question #: 217
Topic #: 1

[All AWS Certified Database - Specialty Questions]

A company is developing an application that performs intensive in-memory operations on advanced data structures such as sorted sets. The application requires sub-millisecond latency for reads and writes. The application occasionally must run a group of commands as an ACID-compliant operation. A database specialist is setting up the database for this application. The database specialist needs the ability to create a new database cluster from the latest backup of the production cluster.
Which type of cluster should the database specialist create to meet these requirements?

A. Amazon ElastiCache for Memcached
B. Amazon Neptune
C. Amazon ElastiCache for Redis
D. Amazon DynamoDB Accelerator (DAX)

Show Suggested Answer

Suggested Answer: C 🗳️

by mbar94 at Sept. 5, 2022, 6:47 a.m.

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gairaj

Highly Voted 2 years, 10 months ago

Selected Answer: C

C is right as advanced data structures supported in Redis not in memcache. https://aws.amazon.com/elasticache/redis-vs-memcached/

upvoted 5 times

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MultiAZ

Most Recent 1 year, 5 months ago

Selected Answer: C

C "advanced data structures such as sorted sets" rules out DynamoDB and MemcacheD

upvoted 1 times

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Germaneli

1 year, 9 months ago

Selected Answer: D

D. DAX supports in-memory operations, it's use case is caching. DynamoDB supports transactional consistency (ACID). You can restore a DynamoDB database from a backup. Would be the best choice for me.

upvoted 1 times

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Pranava_GCP

1 year, 10 months ago

Selected Answer: C

C. Amazon ElastiCache for Redis https://aws.amazon.com/elasticache/redis-vs-memcached/ advanced data structures supported in Redis not in memcache.

upvoted 1 times

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chen0305_099

1 year, 10 months ago

Selected Answer: C

sortset . in memory operator > C (redis)

upvoted 1 times

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lollyj

2 years, 6 months ago

Selected Answer: C

Elasticache for Redis is appropriate for complex data structures, ACID compliant and can be restored from a backup unlike Memcache.

upvoted 2 times

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cloudsunriser

2 years, 9 months ago

Selected Answer: C

Sorted sets seems to be key. I think C is answer.

upvoted 2 times

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zoomac

2 years, 10 months ago

D is the right answer. C is wrong since Redis transactions are not fully ACID compliant. Memcached is a simple key-value store. Neptune is a graph database.

upvoted 4 times

supratip

2 years, 9 months ago

I dont think DAX is ACID compliant

upvoted 3 times

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mbar94

2 years, 10 months ago

Selected Answer: C

Sorted sets - https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/elasticache-use-cases.html#elasticache-for-redis-use-cases-gaming

upvoted 2 times

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