Windows and Timers

Tumbling, sliding, session; triggers, allowed lateness, side outputs; event-time timers — a late event can change an answer already sent

Windows are state plus a trigger plus a timer. GatewayMeter gains sliding p99 latency per model, session-like abandoned-request detection, and error-rate alerts. A late RequestCompleted re-fires a closed cost window and a second result for the same minute reaches the sink — the first appearance of the duplicate the rest of the course is about.

Estimated time: 90 minutes

Stuck on something? The AI tutor sees this lecture—just ask.