What is pg_toast?



What is pg_toast?..

Answer / Anand Kumar Jha

pg_toast (TOAST - Text Out Of Line Allocation Strategy) is an extension used in PostgreSQL to handle large objects (LOBs). When a column's values exceed the maximum size allowed for the data type, they are stored outside the table but linked back using TOASTed pointers. This approach helps avoid wasting space and improves performance by reducing the amount of disk I/O needed.

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