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Exam AWS Certified Solutions Architect - Professional topic 1 question 56 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 56
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

Your company is getting ready to do a major public announcement of a social media site on AWS. The website is running on EC2 instances deployed across multiple Availability Zones with a Multi-AZ RDS MySQL Extra Large DB Instance. The site performs a high number of small reads and writes per second and relies on an eventual consistency model. After comprehensive tests you discover that there is read contention on RDS MySQL.
Which are the best approaches to meet these requirements? (Choose two.)

  • A. Deploy ElastiCache in-memory cache running in each availability zone
  • B. Implement sharding to distribute load to multiple RDS MySQL instances
  • C. Increase the RDS MySQL Instance size and Implement provisioned IOPS
  • D. Add an RDS MySQL read replica in each availability zone
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Suggested Answer: AD 🗳️
by BillyC at Feb. 13, 2020, 10:23 a.m.
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BillyC
Highly Voted 3 years, 7 months ago
Yes. A and D
upvoted 16 times
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noisonnoiton
Highly Voted 3 years, 7 months ago
go with A,D Implement sharding to distribute load to multiple RDS MySQL instances (this is only a read contention, the writes work fine) Increase the RDS MySQL Instance size and Implement provisioned IOPS (not scalable, this is only a read contention, the writes work fine)
upvoted 6 times
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amministrazione
Most Recent 8 months, 3 weeks ago
A. Deploy ElastiCache in-memory cache running in each availability zone D. Add an RDS MySQL read replica in each availability zone
upvoted 1 times
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SkyZeroZx
1 year, 10 months ago
AD best option for read intensive or read problems in app with use RDS keyword in question = After comprehensive tests you discover that there is read contention
upvoted 1 times
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SkyZeroZx
1 year, 10 months ago
Selected Answer: AD
Yes. A and D
upvoted 1 times
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rtguru
1 year, 11 months ago
AD is correct answer. Both read replica and cache will decrease load on primary MySQL
upvoted 1 times
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RRRichard
2 years, 6 months ago
Dont understand why not B and C? the question is about high writes and reads, how could D meet the requiement with only read replica?
upvoted 1 times
fdpv
2 years ago
Because the issue to solve is "read contention on RDS MySQL". There is no mention to DB write issues.
upvoted 1 times
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Ni_yot
3 years, 3 months ago
Yes A and D.
upvoted 1 times
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challenger1
3 years, 4 months ago
My Answer: A&D
upvoted 1 times
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acloudguru
3 years, 5 months ago
very easy one, hope I can have it in my exam
upvoted 1 times
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01037
3 years, 6 months ago
A and D
upvoted 1 times
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Malcnorth59
3 years, 6 months ago
A and D is the best answer
upvoted 1 times
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cldy
3 years, 6 months ago
A. D. to improve read performance.
upvoted 1 times
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bustedd
3 years, 6 months ago
AD is the right answer
upvoted 1 times
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C (25%)
B (20%)
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