Database Design for Spotify Premium System Design

Creating a database model for a Spotify-like platform, covering important features like user management, playlist creation, artist following, track liking, premium features, and payment systems.

6.1. User Information

Here we store important details like user names, emails, passwords, birth dates, and profile pictures. We’ll also include a feature to identify whether users are regular or premium members.

User Information
CREATE TABLE Users (
  User_ID INT AUTO_INCREMENT PRIMARY KEY,
  Name VARCHAR(50) NOT NULL,
  Email VARCHAR(50) NOT NULL UNIQUE,
  Password VARCHAR(100) NOT NULL,
  Date_of_Birth DATE,
  Profile_Image Blob,
  User_Type VARCHAR(10) NOT NULL DEFAULT 'regular'
);

6.2. Premium User Features

There are special features for premium users, like ad-free listening. These features will be stored in a table, and we’ll use another table to connect users with their chosen premium features.

Premium User Features
CREATE TABLE Premium_Feature (
  Premium_Feature_ID INT PRIMARY KEY AUTO_INCREMENT,
  Name VARCHAR(50) NOT NULL
);

CREATE TABLE User_Premium_Feature (
  User_ID INT,
  Premium_Feature_ID INT,
  PRIMARY KEY (User_ID, Premium_Feature_ID),
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID),
  FOREIGN KEY (Premium_Feature_ID) REFERENCES Premium_Feature(Premium_Feature_ID)
);

6.3. Payment Integration

To handle payments, we’ll set up tables to store payment details and subscription plans. Another table will link users with their chosen subscription plans.

Payment Integration
CREATE TABLE Payment (
  Payment_ID INT PRIMARY KEY AUTO_INCREMENT,
  User_ID INT NOT NULL,
  Payment_Method VARCHAR(50) NOT NULL,
  Payment_Date DATE NOT NULL,
  Amount DECIMAL(10, 2) NOT NULL,
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID)
);

CREATE TABLE Subscription_Plan (
  Subscription_Plan_ID INT PRIMARY KEY AUTO_INCREMENT,
  Name VARCHAR(50) NOT NULL,
  Price DECIMAL(10, 2) NOT NULL,
  Description VARCHAR(500) NOT NULL
);

CREATE TABLE User_Subscription_Plan (
  User_ID INT,
  Subscription_Plan_ID INT,
  Start_Date DATE NOT NULL,
  End_Date DATE NOT NULL,
  PRIMARY KEY (User_ID, Subscription_Plan_ID),
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID),
  FOREIGN KEY (Subscription_Plan_ID) REFERENCES Subscription_Plan(Subscription_Plan_ID)
);

6.4. Artists Table

This table keeps track of artists’ basic details like their names, genres, and images. It helps organize and display information about various artists on the platform.

Artists Table
CREATE TABLE Artists (
  Artist_ID INT AUTO_INCREMENT PRIMARY KEY,
  Name VARCHAR(50) NOT NULL,
  Genre VARCHAR(50),
  Image_URL VARCHAR(255) 
);

6.5. Albums Table

In this table, we store information about albums, such as their names, release dates, and cover images. It helps users find and explore different albums easily.

Albums Table
CREATE TABLE Albums (
  Album_ID INT AUTO_INCREMENT PRIMARY KEY,
  Artist_ID INT,
  Name VARCHAR(50) NOT NULL,
  Release_Date DATE,
  Image VARCHAR(255),
  FOREIGN KEY (Artist_ID) REFERENCES Artists(Artist_ID)
);

6.6. Tracks Table

Tracks Table stores details about individual songs, including their names, durations, and file locations. It’s essential for playing music and organizing songs within albums.

Tracks Table
CREATE TABLE Tracks (
  Track_ID INT AUTO_INCREMENT PRIMARY KEY,
  Album_ID INT,
  Name VARCHAR(50) NOT NULL,
  Duration INT NOT NULL,
  Path VARCHAR(255),
  FOREIGN KEY (Album_ID) REFERENCES Albums(Album_ID)
);

6.7. Playlists Table

This table helps users create and manage playlists by storing their names and associated user IDs. It’s where users organize their favorite songs into custom collections.

Playlists Table
CREATE TABLE Playlists (
  Playlist_ID INT AUTO_INCREMENT PRIMARY KEY,
  User_ID INT,
  Name VARCHAR(50) NOT NULL,
  Image Blob,
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID)
);

6.8. Playlist_Tracks Table

Playlist_Tracks Table connects playlists with tracks, allowing users to add songs to their playlists. It keeps track of the order of songs within each playlist.

Playlists_Tracks Table
CREATE TABLE Playlist_Tracks (
  Playlist_ID INT,
  Track_ID INT,
  `Order` INT,
  PRIMARY KEY (Playlist_ID, Track_ID),
  FOREIGN KEY (Playlist_ID) REFERENCES Playlists(Playlist_ID),
  FOREIGN KEY (Track_ID) REFERENCES Tracks(Track_ID)
);

6.9. Followers Table

This table manages the relationship between users and artists, showing which artists a user follows. It helps users stay updated with their favorite artists’ latest releases.

Followers Table
CREATE TABLE Followers (
  User_ID INT,
  Artist_ID INT,
  PRIMARY KEY (User_ID, Artist_ID),
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID),
  FOREIGN KEY (Artist_ID) REFERENCES Artists(Artist_ID)
);

6.10. Likes Table

Likes Table keeps track of which songs users have liked, helping personalize their music recommendations. It’s useful for understanding user preferences and improving recommendations.

Likes Table
CREATE TABLE Likes (
  User_ID INT,
  Track_ID INT,
  Like_Date_Time DATETIME,
  PRIMARY KEY (User_ID, Track_ID),
  FOREIGN KEY (User_ID) REFERENCES Users(User_ID),
  FOREIGN KEY (Track_ID) REFERENCES Tracks(Track_ID)
);

Design Spotify Premium | System Design

In today’s digital world, the demand for premium music streaming services like Spotify is at an all-time high. Understanding the System Design behind Spotify Premium is crucial for software engineers seeking to build robust, scalable, and reliable music streaming platforms. This article explores the architecture of Spotify Premium, offering insights into creating a cutting-edge system capable of delivering high-quality audio content seamlessly while ensuring scalability, durability, and optimal user experience.

Important Topics for Spotify Premium System Design

  • Requirements Gathering for Spotify Premium System Design
  • Capacity Estimation for Spotify Premium System Design
  • Use case diagram for Spotify Premium System Design
  • High-Level Design for Spotify Premium System Design
  • Low-Level Design for Spotify Premium System Design
  • Database Design for Spotify Premium System Design
  • Microservices used for System Design for Spotify Premium
  • API used in Spotify Premium System Design
  • Scalability for Spotify Premium System Design

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1. Requirements Gathering for Spotify Premium System Design

1.1. Functional Requirements for Spotify Premium System Design...

2. Capacity Estimation for Spotify Premium System Design

Song Storage: Utilizing formats like Ogg Vorbis or AAC, with an average song size of 3MB, the storage requirement for songs totals approximately 90TB for 30 million songs.Song Metadata: Storing metadata for songs and users is essential. With an average metadata size of 100 bytes per song, the metadata storage demand is around 3GB for 30 million songs.User Metadata: Each user’s profile requires storage, averaging around 1KB per user. With 500,000 users, the storage needed for user metadata amounts to 0.5GB.Data Redundancy: To ensure high availability and fault tolerance, it’s crucial to replicate data. Replicating data three times, following industry standards, increases the total storage requirement to 300TB....

3. Use Case diagram for Spotify Premium System Design

Below Use Case Diagram Describe the use cases of User and Database System:...

4. High-Level Design for Spotify Premium System Design

...

5. Low-Level Design for Spotify Premium System Design

...

6. Database Design for Spotify Premium System Design

Creating a database model for a Spotify-like platform, covering important features like user management, playlist creation, artist following, track liking, premium features, and payment systems....

7. Microservices used for System Design for Spotify Premium

...

8. API used in Spotify Premium System Design

searchService API – Upon receiving a search request, the search service retrieves relevant information from the metadata database. The response undergoes processing by a rules engine, which applies business rules and configurations before returning the results to the client.viewService API- Similarly, the view service fetches specific content details from the metadata database, applies business rules, and returns the results to the client.uploadService API – It helps content creators put their stuff on the platform. When they upload a song, this service makes sure it’s stored properly and ready for others to enjoy.accountService API – The account service manages user accounts and subscriptions, authenticating users against a dedicated database and verifying subscriptions through payment services.addPlaylistService API- When you want to add a new song to your playlist, this service handles it. It checks if the song fits your playlist rules (like size limits) and updates your playlist accordingly.paymentService API- When you upgrade to a premium plan, this service makes it happen. It ensures your payments are secure and that your account reflects the changes accurately....

9. Scalability for Spotify Premium System Design

Assuming Spotify grows to 50 million users and 200 million songs, we need to make sure our system can handle all that data. For this, we have to think about how we store and manage information....