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Why does API Gateway allow a burst limit higher than the rate limit, and what happens when the burst limit is exceeded?

hard📝 Conceptual Q10 of 15
AWS - API Gateway
Why does API Gateway allow a burst limit higher than the rate limit, and what happens when the burst limit is exceeded?
ABurst limit allows short spikes; exceeding it causes throttling errors
BBurst limit is a backup rate limit; exceeding it queues requests
CBurst limit controls data size; exceeding it drops packets
DBurst limit is unrelated to rate limit; exceeding it has no effect
Step-by-Step Solution
Solution:
  1. Step 1: Understand burst limit purpose

    Burst limit allows handling short bursts of traffic above steady rate limit to improve user experience.
  2. Step 2: Behavior when burst exceeded

    If requests exceed burst limit, API Gateway returns throttling errors to protect backend.
  3. Final Answer:

    Burst limit allows short spikes; exceeding it causes throttling errors -> Option A
  4. Quick Check:

    Burst limit = short spikes; excess = throttling [OK]
Quick Trick: Burst limit handles spikes; excess triggers throttling errors [OK]
Common Mistakes:
  • Thinking burst limit queues requests
  • Confusing burst limit with data size control
  • Assuming burst limit has no effect on throttling

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