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🔧 VACUUM — Space Reclamation


Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to

VACUUM: dọn dead tuple để tái dùng chỗ, không trả disk cho OS


VACUUM là câu lệnh bảo trì lõi của Postgres cho không gian bên trong heap. Sau khi UPDATE/DELETE, tuple cũ vẫn nằm trên page với t_xmax... [Weiterlesen]

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