System Design 面试题与答案
问题 16. Build a recommendation system for music streaming.
The system uses collaborative filtering, genre analysis, and user preferences to recommend music based on individual tastes.
Example:
A user listens to a few songs, and the system suggests additional tracks matching their music preferences.
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问题 17. Design a content moderation system for a user-generated platform.
The system uses machine learning models, user reports, and manual review to identify and filter inappropriate content.
Example:
A user posts content, and the system automatically detects and removes content violating community guidelines.
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问题 18. Create a caching system for a web application.
The system caches frequently accessed data, utilizes expiration policies, and ensures cache consistency for improved performance.
Example:
Web application fetches user profiles from the cache instead of the database for faster response times.
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问题 19. Design an e-commerce search engine.
The system involves indexing products, ranking algorithms, and handling user queries with efficient search and filtering capabilities.
Example:
A user searches for 'laptops,' and the system returns relevant products with sorting options.
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问题 20. Build a notification system for a mobile app.
The system sends push notifications, manages user preferences, and ensures delivery reliability with appropriate queuing mechanisms.
Example:
A user receives a real-time notification when a new message is received in the app.
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