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Exam AWS Certified Database - Specialty topic 1 question 33 discussion

Exam question from Amazon's AWS Certified Database - Specialty
Question #: 33
Topic #: 1
[All AWS Certified Database - Specialty Questions]

A Database Specialist is designing a new database infrastructure for a ride hailing application. The application data includes a ride tracking system that stores
GPS coordinates for all rides. Real-time statistics and metadata lookups must be performed with high throughput and microsecond latency. The database should be fault tolerant with minimal operational overhead and development effort.
Which solution meets these requirements in the MOST efficient way?

  • A. Use Amazon RDS for MySQL as the database and use Amazon ElastiCache
  • B. Use Amazon DynamoDB as the database and use DynamoDB Accelerator
  • C. Use Amazon Aurora MySQL as the database and use Aurora's buffer cache
  • D. Use Amazon DynamoDB as the database and use Amazon API Gateway
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by [deleted] at July 13, 2020, 2:49 p.m.
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learnaws
Highly Voted 3 years, 8 months ago
B. keyword here is microsecond. DAX has that
upvoted 15 times
BillyMadison
3 years, 8 months ago
Agree, microsecond = DynamoDB Dax https://aws.amazon.com/dynamodb/dax/#:~:text=Amazon%20DynamoDB%20Accelerator%20(DAX)%20is,millions%20of%20requests%20per%20second. "Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement – from milliseconds to microseconds – even at millions of requests per second. "
upvoted 6 times
...
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hgelli
Most Recent 1 year, 8 months ago
Selected Answer: B
Microsecond latency (i.e., Elastic Cache or DX). Little operational overhead, DynamoDB.
upvoted 4 times
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SachinGoel
2 years, 4 months ago
Selected Answer: B
Unstructured + microsecond - Dynamo + DAX
upvoted 2 times
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sachin
2 years, 11 months ago
Since the data lookup should be consistent and real time ,so eventual consistency will not work. DAX will not help . I think D is correct
upvoted 2 times
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Dantas
3 years ago
Selected Answer: B
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DAX.concepts.html
upvoted 1 times
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novice_expert
3 years, 1 month ago
Selected Answer: B
microsecond => DAX
upvoted 1 times
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GMartinelli
3 years, 5 months ago
Selected Answer: B
Option B
upvoted 1 times
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GMartinelli
3 years, 6 months ago
Selected Answer: B
Option B
upvoted 1 times
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LMax
3 years, 7 months ago
Agree with B due to latency requirement that can be full field only with DAX
upvoted 1 times
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myutran
3 years, 7 months ago
Ans: B
upvoted 1 times
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JobinAkaJoe
3 years, 7 months ago
B - NoSQL is ideal here. DynamoDB+DAX provides microseconds latency
upvoted 4 times
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Billhardy
3 years, 7 months ago
I will go with B. DAX facilitates the requirement stated
upvoted 2 times
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Ashoks
3 years, 8 months ago
Ans B. Low latency = DynamoDB, Micro sec = DAX
upvoted 1 times
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halol
3 years, 8 months ago
Answer is B ,
upvoted 1 times
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Ebi
3 years, 8 months ago
Answer is B, Microsecond latency is always NoSQL API Gateway has nothing to do with requirement of this question.
upvoted 3 times
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Mickysingh
3 years, 8 months ago
D is correct as document says API gateway to use for minimize developer efforts
upvoted 2 times
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[Removed]
3 years, 8 months ago
I looked at the link, and watched the video. At no point was API gateway mentioned, Dynamo was. I will go with B
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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