Enhanced TOAST Storage Structure

The enhanced TOAST technology uses self-linking to handle dependencies between tuples. The out-of-line storage table divides oversized data into linked list blocks by 2 KB. The TOAST pointer of the main table points to the corresponding data linked list header of the out-of-line storage table. In this way, the mapping between the main table and the out-of-line storage table is greatly simplified, effectively improving the data write and query performance.

• Usage of Enhanced TOAST