How can I integrate monitoring tools with Node.js?

How can I integrate monitoring tools with Node.js?

You can integrate monitoring tools with Node.js by using libraries like Prometheus, Grafana, or New Relic. Would you like to know more about a specific tool?

What is Prometheus and how does it work with Node.js?

Prometheus is an open-source monitoring system that collects metrics from your applications. In Node.js, you can use the 'prom-client' library to expose metrics for Prometheus to scrape.

Can you show me a basic example of using 'prom-client'?

Sure! Here's a simple example:

const client = require('prom-client');
const express = require('express');

const app = express();
const collectDefaultMetrics = client.collectDefaultMetrics;
collectDefaultMetrics();

app.get('/metrics', (req, res) => {
  res.set('Content-Type', client.register.contentType);
  res.end(client.register.metrics());
});

app.listen(3000, () => {
  console.log('Server running on http://localhost:3000');
});

This sets up a basic server that exposes metrics at the /metrics endpoint.

What other monitoring tools can I use with Node.js?

Other than Prometheus, you can use tools like Grafana for visualization, New Relic for application performance monitoring, and Sentry for error tracking. Each has its own integration methods.