Design a Trending Topic System

Functional Requirements

1. Real-time Trending Topics Identification

   • The system should be able to identify and display trending topics in real-time.
   • Topics should be ranked based on their popularity and relevance.

2. Geographical Filtering

   • Users should be able to view trending topics based on their geographical location.
   • Support for multiple regions and countries.

3. Time-based Filtering

   • Users should be able to filter trending topics based on different time frames (e.g., last hour, day, week).

4. Topic Categorization

   • Topics should be categorized into different domains such as sports, politics, entertainment, etc.

5. User Interaction

   • Users should be able to interact with trending topics by liking, sharing, or commenting.

6. Notification System

   • Users should receive notifications for new trending topics based on their interests.

7. Search Functionality

   • Users should be able to search for specific topics and see their trending status.

8. Analytics and Insights

   • Provide analytics on trending topics, such as growth rate, peak time, and user engagement.

Non-Functional Requirements

1. Scalability

   • The system should handle a large number of users and data volume efficiently.
   • Ability to scale horizontally to accommodate increasing traffic.

2. Performance

   • The system should provide real-time updates with minimal latency.
   • Ensure quick response times for user queries and interactions.

3. Reliability

   • Ensure high availability and fault tolerance to minimize downtime.
   • Implement redundancy and failover mechanisms.

4. Security

   • Protect user data and ensure secure access to the system.
   • Implement authentication and authorization mechanisms.

5. Data Consistency

   • Ensure data consistency across different components of the system.
   • Implement mechanisms to handle eventual consistency where necessary.

6. Data Storage and Retention

   • Efficiently store and manage large volumes of data.
   • Implement data retention policies to manage storage costs.

7. Extensibility

   • Design the system to easily incorporate new features and functionalities.

8. Localization

   • Support multiple languages and regional settings for a global user base.