Use `pprof` to profile a Go application

main.go

import _ "net/http/pprof"

// ...

go func() {
  log.Println(http.ListenAndServe("localhost:6060", nil))
}()

main.sh

#!/bin/bash

# CPU:
go tool pprof -http=localhost:8080 localhost:6060 # Will collect samples for ~10s

# Memory:
go tool pprof -http=localhost:8080 localhost:6060/debug/pprof/heap