A meteorological system monitors 600 temperature gauges, obtaining temperature samples
every minute and saving each sample to a DynamoDB table. Each sample involves writing
1K of data and the writes are evenly distributed over time. How much write throughput is
required for the target table?
A.
3600 write capacity units
B.
1 write capacity unit
C.
10 write capacity units
D.
60 write capacity units
E.
600 write capacity units
C
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I agree with the answer. C
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C
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C
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please explain why C?
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600 temperature gauges is obtained every minute. That makes 10 per seconds.
All writes are 1kb (only unit of read provisioned throughput are rounded up to increment of 4kb)
10 x 1 = 10 units of write throughput
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C
600 gauges per minute
therefore 600/60 = 10 gauges per second
conditional rights = 10 x 1KB = 10 writes
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C.
Unit of Write Provisioned Throughput:
All writes are 1 KB
All write consist of 1 write per second
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C – the key phrase being “Writes are evenly distributed over time”, that means per-second so, 10 writes.
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C
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yay math!
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C
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