Requirements

Imagine you're building a subscription-based sports website, "SportsVerse," that provides users with real-time scores, game statuses, and highlights for various sports. Users subscribe to specific sports and teams to receive personalized updates. The system needs to be designed to handle a growing number of sports, teams, and users efficiently and reliably. The challenge lies in crafting a flexible and maintainable architecture that can accommodate future features and evolving data sources. We want to ensure users get timely information on their favorite teams and sports while the platform remains scalable. Furthermore, SportsVerse aims to offer varied subscription tiers with varying features and content access. # Requirements ## Functional Requirements 1. **User Subscription Management:** * Users should be able to subscribe and unsubscribe to various sports (e.g., basketball, soccer, tennis). * Users should be able to subscribe and unsubscribe to specific teams within a sport (e.g., Lakers in basketball). * The system should support different subscription tiers (e.g., Basic, Premium, VIP), each offering different features and content access (e.g., real-time scores, highlights, replays). * The system must handle subscription renewals and cancellations. * The system must restrict content access based on the user's subscription tier. 2. **Real-time Score Updates:** * The system should receive real-time score updates from external data sources. * These updates should be processed and disseminated to subscribed users with minimal delay. * The system should support various sports and handle different scoring formats (e.g., points in basketball, goals in soccer, sets in tennis). * The system should persist game scores and related information. 3. **Game Status Updates:** * The system should receive updates on game status (e.g., Scheduled, In Progress, Final, Postponed). * Users should receive notifications about game status changes for their subscribed teams and sports. * The system should handle different game status transitions and ensure data consistency. 4. **Content Delivery (Highlights):** * The system should be able to deliver sports highlights to users. * Highlight content should be associated with specific games and sports. * Access to highlight content should be controlled based on the user's subscription tier. * The system should support different content formats (e.g., video clips, text summaries). 5. **Team and Sport Management:** * Administrators should be able to add/remove sports and teams. * The system should maintain a consistent and up-to-date list of sports and teams. ## Non-Functional Requirements 1. **Scalability:** * The system should be able to handle a large number of concurrent users and subscriptions. * The system should be able to accommodate a growing number of sports and teams. 2. **Concurrency:** * The system should handle concurrent updates from multiple data sources and user requests without data corruption. * Score updates and subscription changes must be handled thread-safely. 3. **Extensibility:** * The system should be designed to easily support new sports, teams, and subscription tiers without major code changes. * Adding new data sources for score updates should be straightforward. * The system should be designed with the Open/Closed Principle in mind. 4. **Maintainability:** * The code should be well-structured, modular, and easy to understand. * The system should be designed to minimize dependencies between components. * Proper logging and monitoring should be implemented. 5. **Testability:** * The system should be designed to facilitate unit testing and integration testing. * Dependencies should be easily mockable. 6. **Thread Safety**: * Ensure that any shared mutable state is properly synchronized using appropriate concurrency control mechanisms (e.g., locks, atomic variables). * Consider thread-safe data structures for storing game scores and subscription information. ## Core Entities 1. **User:** Represents a user of the SportsVerse platform, including their subscription information. 2. **Sport:** Represents a sport (e.g., basketball, soccer). 3. **Team:** Represents a team within a sport (e.g., Lakers, Barcelona). 4. **Subscription:** Represents a user's subscription to a sport or team, including the subscription tier. 5. **SubscriptionTier:** Represents different subscription levels (e.g., Basic, Premium, VIP) and their associated features. 6. **Game:** Represents a sporting event between two teams, including the score and status. 7. **ScoreUpdate:** Represents an update to the score of a game. 8. **GameStatus:** Represents the status of a game (e.g., Scheduled, In Progress, Final). 9. **Content:** Represents sports highlight or related content, with access controlled by subscription tier. 10. **ScoreProvider**: An interface for fetching score updates from different external data sources. This promotes extensibility and allows for integrating various data feeds seamlessly.

Design subscription-based sports website which can display scores, game status, history for any games.

Requirements

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