Operations | Monitoring | ITSM | DevOps | Cloud

Prometheus and Grafana are the default monitoring recommendations across DevOps blogs, Reddit, and Hacker News, and for good reason. Prometheus is open-source and backed by the CNCF, but it’s not actually a complete monitoring system. It’s more of a metric collection engine.

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The Node.js service has just been containerized and deployed with a single fly deploy command across continents. Everything seems to be alright, but then a week later, a user messages you saying the app is slow. You run the fly logs command and scroll through some logs, and find nothing out of the ordinary. The Fly.io dashboard says the app is running and healthy, but something behind the scenes is slowing down the app, and you have no idea what. You don’t even know where to start.