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News Feed / Fanout System
The system behind every social media timeline — and the project where 'just query the database' finally, definitively stops working. Build a feed system where each user sees posts from everyone they follow, merged and ranked by recency, functioning like a simplified Twitter/X or Instagram timeline.
~12h
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A feed system where each user sees posts from everyone they follow, merged and ranked by recency — functioning like a simplified Twitter/X or Instagram timeline, at a scale where the obvious implementation breaks.
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