Graham McIntire
23aa2786ab
ON CONFLICT now only replaces score/factors when the score actually changed, avoiding dead tuple generation for the ~80% of grid points that don't change between consecutive HRRR runs. Migration sets aggressive autovacuum on propagation_scores: zero cost delay, 2000 cost limit, 1% scale factor. The table was at 72GB with 108M dead rows because default autovacuum couldn't keep pace with 14M upserts per hour. |
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