Incorrect:

// app/routes/dashboard.js
import Route from '@ember/routing/route';

export default class DashboardRoute extends Route {
  async model() {
    // Sequential waterfall - slow!
    const user = await this.store.request({ url: '/users/me' });
    const posts = await this.store.request({ url: '/posts' });
    const notifications = await this.store.request({ url: '/notifications' });

    // No error handling
    // No cancellation
    return { user, posts, notifications };
  }
}