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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 456 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 456
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company has deployed a multiplayer game for mobile devices. The game requires live location tracking of players based on latitude and longitude. The data store for the game must support rapid updates and retrieval of locations.
The game uses an Amazon RDS for PostgreSQL DB instance with read replicas to store the location data. During peak usage periods, the database is unable to maintain the performance that is needed for reading and writing updates. The game's user base is increasing rapidly.
What should a solutions architect do to improve the performance of the data tier?

  • A. Take a snapshot of the existing DB instance. Restore the snapshot with Multi-AZ enabled.
  • B. Migrate from Amazon RDS to Amazon Elasticsearch Service (Amazon ES) with Kibana.
  • C. Deploy Amazon DynamoDB Accelerator (DAX) in front of the existing DB instance. Modify the game to use DAX.
  • D. Deploy an Amazon ElastiCache for Redis cluster in front of the existing DB instance. Modify the game to use Redis.
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Suggested Answer: D 🗳️
by jennyka76 at May 31, 2021, 2:01 a.m.
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dumdumex
Highly Voted 3 years, 7 months ago
ElastiCache Redis
upvoted 31 times
th3cookie
2 years, 9 months ago
key/value store is a much better use case for this purpose than a relation database.
upvoted 2 times
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lovelyone
Highly Voted 3 years, 7 months ago
The answer is D Deploy an Amazon ElastiCache for Redis cluster in front of the existing DB instance. Modify the game to use Redis keywords: The game requires live location tracking of players based
upvoted 16 times
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BECAUSE
Most Recent 1 year, 11 months ago
Selected Answer: D
D is the answer
upvoted 1 times
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EasonFeng
2 years, 8 months ago
Selected Answer: C
Redis does not help with writing performance.
upvoted 2 times
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vasili23
2 years, 8 months ago
C is right answer, becuase you use dynamodb and not rds cluster, when you have rds its good choise to use redis solution but now its dax witch is like redis but it is caching like redis, its good solution when you have hight read capasity.
upvoted 1 times
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awstestprep2022
2 years, 9 months ago
D would be the real life answer or if you are answering this for Redis certification. Since it is AWS Soln architect exam, C is the logical exam answer
upvoted 1 times
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jn9mo4
2 years, 9 months ago
Redis help only with reading, not with writing problem. I think the answer is C
upvoted 1 times
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ahaz
2 years, 9 months ago
Selected Answer: D
C would be the answer if the current DB was DynamoDB, or if it was mentioned to migrate to DynamoDB first. Given that the current DB is RDS Postgre, having a Redis cache seems to be a better answer.
upvoted 2 times
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queen101
2 years, 9 months ago
DDDDDDDDDDDD
upvoted 1 times
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Shane_theNetworkGuy
2 years, 9 months ago
Chose D by a method of elimination. For gaming, We generally use Dynamo DB.
upvoted 1 times
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Desi_Moonda
2 years, 9 months ago
Answer is C. DynamoDB is most performant DB for Gaming app
upvoted 1 times
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Desi_Moonda
2 years, 9 months ago
Dynamo DB most performant DB for gaming app
upvoted 1 times
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awsas2022
2 years, 9 months ago
What is the correct answer ?
upvoted 1 times
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marklovesaws143
2 years, 9 months ago
Selected Answer: D
DDDDDDDDDD
upvoted 1 times
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slcheng
2 years, 10 months ago
Selected Answer: D
Vote D.
upvoted 1 times
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naveenagurjara
2 years, 10 months ago
Multi AZ provides failover support but the issue is about performance. ES is not a DB to migrate into DAX is with key value NoSQL dynamoDB and not relational DB. Zimple!
upvoted 2 times
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etheng1970
2 years, 10 months ago
Selected Answer: D
Correct answer is Redis, the most simple soln. Not DynamoDB because it is NoSQL DB.
upvoted 2 times
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