How can I use the Go metrics library in my project?

How can I use the Go metrics library in my project?

You can start by importing the library and initializing a metrics registry. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

package main

import (
    "github.com/prometheus/client_golang/prometheus"
    "github.com/prometheus/client_golang/prometheus/promhttp"
    "net/http"
)

func main() {
    counter := prometheus.NewCounter(prometheus.CounterOpts{
        Name: "my_counter",
        Help: "This is my counter",
    })
    prometheus.MustRegister(counter)

    http.Handle("/metrics", promhttp.Handler())
    http.ListenAndServe(":8080", nil)
}

This sets up a basic counter and exposes metrics at /metrics.

How do I increment the counter in my application?

You can increment the counter by calling counter.Inc() whenever the event you want to track occurs.

What other metrics can I track using this library?

You can track gauges, histograms, and summaries, each serving different purposes for monitoring your application.