Multiple ChoiceBeginner 45s
Time-series storage choice for IoT
You must store high-cardinality device metrics with fast time-range queries and aggressive downsampling. Which storage fits best?
Options
- 1A single JSON document per device overwritten each write
- 2A time-series database with time-partitioned storage and retention policies
- 3A relational table with one row per metric and no partitioning
- 4An in-memory key-value store with no persistence
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