Creating backend authentication

In previous exercises in Chapter 10, Adding a Vuex Store, and Chapter 11, Writing Route Middlewares and Server Middlewares, we used a dummy user for our backend authentication, particularly in /chapter-11/nuxt-universal/route-middleware/per-route/ for per-route middlewares, for example:

// server/modules/public/user/_routes/login.js
router.post('/login', async (ctx, next) => {
  let request = ctx.request.body || {}

  if (request.username === 'demo' && request.password === 'demo') {
    let payload = { id: 1, name: 'Alexandre', username: 'demo' }
    let token = jwt.sign(payload, config.JWT_SECRET, { expiresIn: 1 * 60 })
    //...
  }
})

But in this chapter, we are going to use a database with some user data for authentication. Also, in Chapter 9, Adding a Server-Side Database, we used MongoDB as our database server. But this time, let's try a different database system for the sake of diversity &...