# Rails Engines & Aplikasi Modular (Ruby on Rails)

> Mountable engines, isolated engines, namespacing, arsitektur berbasis gem

- 18 pertanyaan wawancara
- Senior
- [Pertanyaan Wawancara: Ruby on Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara.md)

## 1. Apa itu Rails Engine?

**Jawaban**

Rails Engine adalah aplikasi Rails mini yang dapat di-mount di dalam aplikasi host. Ia memungkinkan berbagi kode (models, controllers, views, routes) di antara beberapa aplikasi atau membuat fitur yang terisolasi dan dapat digunakan kembali. Gem seperti Devise, Sidekiq Web UI, dan ActiveAdmin adalah contoh engine populer yang digunakan dalam ekosistem Rails.

## 2. Perintah mana yang digunakan untuk menghasilkan Rails Engine mountable baru?

**Jawaban**

Perintah rails plugin new dengan opsi --mountable menghasilkan engine lengkap dengan namespace sendiri, routes terisolasi, dan struktur folder. Opsi --mountable membuat engine yang sepenuhnya terisolasi dari aplikasi host, berbeda dengan --full yang menghasilkan engine tidak terisolasi yang berbagi namespace aplikasi utama.

## 3. Apa perbedaan utama antara engine --mountable dan engine --full?

**Jawaban**

Engine --mountable sepenuhnya terisolasi dengan namespace (module) sendiri, helpers sendiri, dan routes yang terisolasi di bawah prefiks yang dapat dikonfigurasi. Engine --full berbagi namespace aplikasi host, yang dapat menimbulkan konflik nama. Isolasi pada mountable engine memastikan bahwa kelas dan routes engine tidak mencemari namespace aplikasi utama.

## 15 pertanyaan lagi tersedia

- Bagaimana cara me-mount Rails Engine di file routes.rb aplikasi host?
- Apa tujuan dari direktif isolate_namespace dalam Rails Engine?

Daftar gratis: https://sharpskill.dev/id/login

## Topik wawancara Ruby on Rails lainnya

- [Dasar-Dasar Ruby](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/ruby-basics.md): 25 pertanyaan, Junior
- [Pemrograman Berorientasi Objek di Ruby](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/ruby-oop.md): 20 pertanyaan, Junior
- [Dasar-Dasar Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-fundamentals.md): 18 pertanyaan, Junior
- [Routing & Controllers](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/routing-controllers.md): 22 pertanyaan, Junior
- [Dasar-Dasar ActiveRecord](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/active-record-basics.md): 25 pertanyaan, Junior
- [Views & Template ERB](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/views-erb-templates.md): 20 pertanyaan, Junior
- [Asosiasi ActiveRecord](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/active-record-associations.md): 24 pertanyaan, Mid-Level
- [Kueri ActiveRecord Lanjutan](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/active-record-queries.md): 28 pertanyaan, Mid-Level
- [Formulir Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-forms.md): 20 pertanyaan, Mid-Level
- [Autentikasi & Otorisasi](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/authentication-authorization.md): 22 pertanyaan, Mid-Level
- [Asset Pipeline modern & frontend](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-asset-pipeline.md): 18 pertanyaan, Mid-Level
- [Mode API Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-api-mode.md): 20 pertanyaan, Mid-Level
- [Pengujian dengan RSpec](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-testing-rspec.md): 24 pertanyaan, Mid-Level
- [ActiveJob & Background Jobs](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/active-job-background-jobs.md): 20 pertanyaan, Mid-Level
- [ActionCable & WebSockets](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/action-cable-websockets.md): 18 pertanyaan, Mid-Level
- [ActionMailer](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/action-mailer.md): 18 pertanyaan, Mid-Level
- [ActiveStorage](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/active-storage.md): 20 pertanyaan, Mid-Level
- [Strategi Caching](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/caching-strategies.md): 20 pertanyaan, Mid-Level
- [Migrasi tingkat lanjut](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/database-migrations-advanced.md): 20 pertanyaan, Mid-Level
- [Optimasi Performa](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/performance-optimization.md): 26 pertanyaan, Senior
- [Design Pattern Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-design-patterns.md): 22 pertanyaan, Senior
- [Metaprogramming Ruby](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/ruby-metaprogramming.md): 20 pertanyaan, Senior
- [Keamanan Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-security.md): 22 pertanyaan, Senior
- [GraphQL dengan Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/graphql-rails.md): 20 pertanyaan, Senior
- [Deployment & Produksi](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-deployment-production.md): 20 pertanyaan, Senior
- [Monitoring & Logging](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/monitoring-logging.md): 20 pertanyaan, Senior
- [Strategi Upgrade Rails](https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-upgrade-strategies.md): 18 pertanyaan, Senior

---

Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack.
HTML version of this page: https://sharpskill.dev/id/technologies/ruby-on-rails/pertanyaan-wawancara/rails-engines-modular-apps