PCD • Practice Test 5 — 25 Questions
Free PCD practice test 5 — 25 questions with explanations. No signup required.
A company is designing a Bigtable schema for time-series data from millions of devices. Each device sends a reading every minute. The row key is currently 'device_id#timestamp'. The engineering team notices hot spots on a few popular devices. Which row key design change would BEST distribute writes across the cluster?
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25 questions · instant feedback and full explanations after every question.