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4 年
PostgreSQL 14中TOAST的新压缩算法LZ4,它能有多快?
对于列压缩选项,PostgreSQL 14提供了新的压缩方法LZ4。与TOAST中现有的PGLZ压缩方法相比,LZ4压缩更快。本文介绍如何使用整个选项,并和其他压缩算法进行性能比较。 背景 PG中,页是存储数据的单位,默认是8KB。一般情况下,一行数据不允许跨页存储。然而,有 ...
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