I was looking at the download stats for prom-client and was surprised to see it's doing roughly 7 million weekly downloads. For those using it in production, what are you actually using it for? The package seems to provide two main things: Exposing metrics in a Prometheus-compatible format Collecting default process metrics (CPU, memory, event loop lag, GC stats, etc.) I'm curious how people use it in practice. If you had to pick one option, which best describes your usage? Only the default metrics Mostly default metrics, a few custom ones Mostly custom business/application metrics Heavy use of both default and custom metrics I have it installed but barely use it I don't use prom-client at all Feel free to comment with the number and elaborate if there's a particular metric that's saved you from an outage or helped you track down a nasty issue. I'm especially interested in what metrics people consider essential versus noise. submitted by /u/XpucToXT [link] [comments]