Rescore cached For You posts when the action sequence is newer - #176
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Rescore cached For You posts when the action sequence is newer#176Pitchfork-and-Torch wants to merge 1 commit into
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Cache hits still hydrate a fresh UAS sequence, but PhoenixScorer skipped inference whenever has_cached_posts was set. Frozen VQV/dwell/fav heads then ranked For You for up to 180s after the viewer finished or skipped videos. Rescore when last_modified_epoch_ms or last_sequence_time is newer than a cached last_scored_at_ms. Co-authored-by: Jon Bailey <Pitchfork-and-Torch@users.noreply.github.com>
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Cache hits still hydrate a fresh UAS scoring sequence, then PhoenixScorer disabled itself whenever has_cached_posts was set. RankingScorer kept blending the Redis-frozen Phoenix heads (VQV, dwell, fav) for the full 180s TTL, so For You order ignored videos the viewer just finished or skipped.
Proof
Fix: keep the Redis candidate cache, but run Phoenix again when any cached last_scored_at_ms is missing or older than the hydrated sequence. Unchanged cache hits stay skipped. Missing sequence stays skipped so update() cannot wipe cached heads with Default scores.