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downsampling

Replacing many detailed readings with fewer summary ones, such as hourly averages.

Downsampling replaces raw points with per-window aggregates at a coarser resolution, cutting storage while keeping trends.

Examples

  • Sixty raw greenhouse readings from one hour become a single hourly row holding their count, average, minimum and maximum, and the raw rows are deleted in the same transaction.

See also

retention policy aggregate time window
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