Spotify 2026

Java application that simulates a music platform, built following Clean Architecture principles.

Architecture

The project is structured in 3 layers:

• Domain - Models, repository interfaces and use cases. No external dependencies.
• Data - Repository implementations and data sources (in-memory, API).
• Presentation - Views that consume use cases and display results.

Each feature (songs, albums, authors) follows this same structure independently.

Design Patterns

• Repository Pattern - Abstracts data access behind interfaces defined in the domain layer.
• Singleton Pattern - Ensures a single shared instance of in-memory data sources.

Features

• Songs
• Albums
• Authors

Tech Stack

• Java
• Gradle (Kotlin DSL)

Exercises

• Exercise 01 - Get albums list
• Exercise 02 - Save author in local
• Exercise 03 - Get authors from API using Retrofit
• Exercise 04a - Singleton pattern in Songs feature
• Exercise 04b - Singleton pattern in Authors feature
• Exercise 05a - SaveSongUseCase
• Exercise 05b - SaveAuthorUseCase
• Exercise 06a - DeleteSongUseCase
• Exercise 06b - DeleteAuthorUseCase
• Exercise 06c - DeleteAlbumUseCase