Datum Corporation runs a telemetry container at 30,000 RU/s of standard (manual) throughput in a single-region account. Over the last 30 days, the highest Normalized RU Consumption in each hour averaged 85 percent. Finance asks whether switching the container to autoscale with a 30,000 RU/s maximum would lower the bill. What should you recommend?
- A.
Keep standard (manual) throughput, because average utilization above 66 percent means manual costs less.
- B.
Switch to autoscale, because autoscale always costs less than manual throughput for a single-region account.
- C.
Convert the account to serverless, because serverless is always cheaper than provisioned throughput at any utilization.
- D.
Switch to autoscale, because autoscale bills only for the request units actually consumed each second.
Show answer
Answer: A
With average utilization of 85 percent, above Learn's 66 percent threshold, standard (manual) throughput remains cheaper than autoscale.
- A. Learn's guidance is that when average hourly utilization is above 66 percent, standard throughput is cheaper than autoscale billed at 1.5 times the rate.
- B. Autoscale is cheaper only when the maximum is fully used for about 66 percent of hours or less; at 85 percent it costs more.
- C. Serverless suits intermittent traffic with a low average-to-peak ratio, and an existing provisioned account can't simply be converted to it.
- D. Autoscale bills the highest RU/s scaled to in each hour at 1.5 times the manual rate; it is not consumption-based per second, which is serverless.