ExpertMedium1 markMultiple Choice
AWS SAA-C03 · Question 51 · Domain 3.2: Compute Performance
A serverless application uses AWS Lambda. During sudden traffic spikes, users experience high latency because Lambda functions take time to initialize (cold starts). Which TWO features can be used to mitigate this issue? (Select TWO.)
A serverless application uses AWS Lambda. During sudden traffic spikes, users experience high latency because Lambda functions take time to initialize (cold starts). Which TWO features can be used to mitigate this issue? (Select TWO.)
Answer options:
A.
Provisioned Concurrency
B.
Reserved Concurrency
C.
Keep-alive ping via EventBridge
D.
Lambda Layers
E.
Increase the function timeout.
How to approach this question
Identify methods to keep Lambda execution environments warm.
Full Answer
Provisioned Concurrency, Keep-alive ping via EventBridge
Provisioned Concurrency initializes a requested number of execution environments so that they are prepared to respond immediately. Alternatively, a common pattern is to use EventBridge to 'ping' the function every few minutes to keep it warm.
Common mistakes
Confusing Reserved Concurrency (limits) with Provisioned Concurrency (warm starts).
Practice the full AWS SAA-C03 Practice Exam 5
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