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    <title>Replication on dbalog.dev</title>
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      <title>PostgreSQL 19의 wal_level — 고정값에서 동적 floor 값으로</title>
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      <pubDate>Wed, 13 May 2026 12:40:54 +0900</pubDate>
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      <description>PostgreSQL 19부터 wal_level이 고정 설정이 아니라 floor 값으로 동작한다. logical replication slot이 생기면 effective level이 자동으로 올라가고, 마지막 slot이 사라지면 다시 내려간다. cascading standby와 archived WAL의 비대칭 함정 포함.</description>
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