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perf(db): index playlist trending order #906

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perf(db): index playlist trending order #906

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10 changes: 10 additions & 0 deletions ddl/migrations/0218_playlist_trending_scores_ordered_idx.sql
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Original file line number Diff line number Diff line change
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-- Hot playlist trending callers order by score DESC, playlist_id DESC after
-- filtering on type/version/time_range. Put the ordering columns immediately
-- after the equality predicates so PostgreSQL can satisfy the LIMIT without a
-- parallel scan and sort.

create index concurrently if not exists idx_playlist_trending_scores_ordered
on playlist_trending_scores (type, version, time_range, score desc, playlist_id desc);

comment on index idx_playlist_trending_scores_ordered is
'Covers playlist trending endpoints ordered by score desc, playlist_id desc.';
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