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      <title>PostgreSQL 18의 autovacuum_worker_slots — 재시작 없이 worker 수 조정하기</title>
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      <description>PostgreSQL 18에서 autovacuum 설정이 worker_slots(재시작 필요)와 max_workers(SIGHUP 가능)로 분리됐다. maintenance window 없이 vacuum throughput을 튜닝하는 흐름과, 슬롯을 거꾸로 줄일 때의 함정.</description>
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