Right way to do metrics? Prometheus + Grafana | NestJS | Page 1

bold flax May 13, 2025, 2:03 PM

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I want to integrate metrics into my nestjs application. I intend to deploy using kubernetes and have prometheus+grafana at the cluster level for server metrics around response times, requests/s, pod resource usage... etc.

Also at the application level so I can have custom metrics (like requests made to 3rd party API, cache hit/miss rates etc).

I've been looking at tutorials but because of the variety of ways it can be done I'm hesitant to start using a particular library or method incase they are outdated or not considered best-practice. Nestjs officials docs also don't seem to promote any particular way.

open sparrow May 13, 2025, 2:28 PM

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I like https://github.com/pragmaticivan/nestjs-otel

GitHub

GitHub - pragmaticivan/nestjs-otel: OpenTelemetry (Tracing + Metric...

OpenTelemetry (Tracing + Metrics) module for Nest framework (node.js) 🔭 - pragmaticivan/nestjs-otel

bold flax May 14, 2025, 9:07 AM

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open sparrow I like https://github.com/pragmaticivan/nestjs-otel

Thanks. That seems like a complete solution and I will take note of it for the future. I want to lean on simplicity for now though since I'm new to monitoring and metrics. Will only recently be deploying my first application/API and want to start out basic

open sparrow May 14, 2025, 9:09 AM

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It's actually just a simple wrapper over opentelementry + prometheus. Read through the readme and you should undertand most of it

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Ah, I see, you don't need tracing just yet.

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If you only need prometheus, then this lib is great https://github.com/willsoto/nestjs-prometheus

GitHub

GitHub - willsoto/nestjs-prometheus: NestJS module for Prometheus

NestJS module for Prometheus. Contribute to willsoto/nestjs-prometheus development by creating an account on GitHub.

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If you don't want to use a wrapper libray, just look at the source and see how it's implemented

#Right way to do metrics? Prometheus + Grafana