What the first 24 hours of production CloudWatch data told us

Originally published on graycloudarch.com . The morning after go-live, the first thing I looked at was CPU. One of the two delivery services was sitting at 99.8% average utilization across 9 tasks. P50 latency: 1,010ms. We'd launched deliberately without autoscaling. The plan was to observe real traffic patterns before configuring a scaling policy — you can't tune a policy you haven't seen the workload demand yet. What we didn't know was that the workload would reveal something about the task it