Hot algorithm
score = log(votes) + age_penalty. Time-decay + log-scaled votes. Prevents old high-vote posts from dominating.
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Hot algorithm
score = log(votes) + age_penalty. Time-decay + log-scaled votes. Prevents old high-vote posts from dominating.
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Comment tree
Threaded comments. Ranked by best/top/controversial. Materialized as tree in Cassandra. Wide row per post.