news-feed-pull-uses-heap-merge

Status: IN

Fan-out-on-read merges all followed users' timelines via `heapq.merge` with negated timestamps, avoiding full materialization of all posts

Source: entries/2026/06/05/news-feed-system-news_feed.md

Depended on by

• hybrid-fanout-bounds-both-write-and-read-cost

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