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Exam AWS Certified Developer Associate topic 1 question 360 discussion

Exam question from Amazon's AWS Certified Developer Associate
Question #: 360
Topic #: 1
[All AWS Certified Developer Associate Questions]

A developer is integrating Amazon ElastiCache in an application. The cache will store data from a database. The cached data must populate real-time dashboards.

Which caching strategy will meet these requirements?

  • A. A read-through cache
  • B. A write-behind cache
  • C. A lazy-loading cache
  • D. A write-through cache
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Suggested Answer: D 🗳️
by k1kavi1 at Nov. 27, 2022, 10:58 a.m.
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pancman
2 years, 3 months ago
Selected Answer: D
Since it is for a dashboard, we don't want stale data. Hence write-through is the correct option. Lazy loading has the disadvantage of a chance to serve stale data. The other two options are just made up names, they are not real Elasticache strategies :)
upvoted 4 times
maurice2005
1 year, 2 months ago
we have write-behind cache and write-behind cache strategies! They are not made up!
upvoted 1 times
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fabriciollf
2 years, 5 months ago
Selected Answer: D
I believe is D "The advantages of write-through are as follows: Data in the cache is never stale." AWS documentation.
upvoted 2 times
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michaldavid
2 years, 5 months ago
Selected Answer: D
I think D as well
upvoted 3 times
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DrCloud
2 years, 5 months ago
Selected Answer: D
Write-through: The write-through strategy adds data or updates data in the cache whenever data is written to the database.
upvoted 2 times
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k1kavi1
2 years, 5 months ago
Selected Answer: D
https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/Strategies.html#Strategies.WriteThrough
upvoted 3 times
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