const express = require('express')

const app = express()

app.get('/', (req, res) => {

setTimeout(() => {

res.send('ok')

}, 20000)

})

app.listen(3000, () => console.log('Example app listening on port 3000!'))

// apt install npm

// npm install n -g

// n lts

// node app.js

// => http://lovegaudi.art:3000