AWS - Lambda
A Lambda function runs 100,000 times with 1 GB memory for 0.3 seconds each, but you want to estimate cost if memory is doubled and duration halves. What is the new GB-seconds?
A Lambda function runs 100,000 times with 1 GB memory for 0.3 seconds each, but you want to estimate cost if memory is doubled and duration halves. What is the new GB-seconds?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Calculate original GB-seconds
Original = 100,000 x 0.3 x 1 = 30,000 GB-seconds.Step 2: Calculate new GB-seconds with doubled memory and halved duration
New = 100,000 x 0.15 x 2 = 30,000 GB-seconds.Step 3: Verify calculation
Doubling memory and halving duration keeps GB-seconds same, but question asks for new GB-seconds, so 30,000 is correct.Final Answer:
30,000 GB-seconds -> Option DQuick Check:
Doubling memory x halving duration = same GB-seconds [OK]
Quick Trick: Doubling memory and halving duration keeps GB-seconds same [OK]
Common Mistakes:
- Multiplying memory and duration without halving
- Ignoring duration change
- Confusing GB-seconds calculation
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