Social & Feed

Design Quora (Q&A with complex feed aggregation)

A Q&A platform aggregating topic-based content into a personalized feed, ranking answers by quality signals rather than just recency.

Core Architectural Components

System of record linking answers to their parent question.

Users follow topics and questions, driving feed relevance.

Scores answers on upvotes, author credibility, and engagement, not just chronology.

Merges followed topics, questions, and people into one ranked feed.

Alerts users to new answers and comments on content they follow.

Detects near-duplicate questions and merges or surfaces them.

Tracks topic-specific authority used in answer ranking.