Rate aggregation #

A single-value metrics aggregation that sums a numeric field, intended for counters and rates inside date_histogram buckets (per-interval totals).

Example #

Outside a histogram, rate equals sum — here the total amount, 6750. Inside a date_histogram it returns each bucket’s total.

Parameters for rate #

• field
  (Required, string) Numeric field you wish to aggregate.
• unit
  (Optional, string) Date histogram unit used to normalize per-bucket values (e.g. day).