Design a Feed Generator

Hard

+300 XP

PRO

Low Level DesignLLDSystem DesignOOPStrategy PatternObserver PatternFactory PatternCachingAlgorithms

Design a feed generator system with ranking strategies, caching, real-time updates, and content filtering.

Feed Gen

Ranking Strategy

Strategy Pattern:

Changing the strategy hot-swaps the sorting algorithm used by the Feed Generator service.

Your Feed Updated: 3:46:05 PM

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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Step-by-Step Guidance

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Design Patterns

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Complete Solutions

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