2:17am. The pager goes off.
An alarm fires: SQS message delay > 5 minutes.
A batch job somewhere in the system just spiked the queue from 100k messages per minute to 1 million. Your workers are auto scaling, but it takes 10–15 minutes to catch up.
Nothing is broken. The processing rate is exactly what it was five minutes ago—stable, efficient, and maxed ou…
