A8Windows and aggregation

The problem

1 s on screen = 250 ms

Three hundred clicks a second on twenty ads. Do you write three hundred rows?

A row per click

Clicks on 20 ads arrive 300 a second; one in five arrives up to 2 s late. Each click adds one to its ad's row.

Live metrics for each version of the scene
Metric	Per click	In windows	Change
	0%	0%	—
target ≤ 400 ms	—	—	—
	—	—	—
	—	—	—

A8Windows and aggregation

Counting clicks per ad per minute at scale means summing the stream as it flows, not updating a row per click.