Design a Feed Generator
Strategy PatternObserver PatternFactory PatternCachingAlgorithms
Design a feed generator system that aggregates content from multiple sources, ranks posts based on various algorithms, and delivers personalized feeds to users. The system should support different ranking strategies, caching mechanisms, real-time feed updates, and content filtering. The design should be extensible, performant, and handle high volumes of concurrent requests.
What You'll Build
- The system should aggregate posts from multiple sources (users, pages, groups) and support various content types (text, images, videos, links).
- Users should be able to request their personalized feed, which includes posts from sources they follow or are interested in.
- The system should support multiple ranking strategies (chronological, engagement-based, relevance-based, hybrid) that can be selected at runtime.
- Generated feeds should be cached per user to improve response times and reduce computational load.
- The cache should be invalidated when new posts are created, user preferences change, or after a certain time period (TTL).
- ...and more
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