PostgreSQL 真空命令优化数据库性能
原文英文,约4000词,阅读约需15分钟。发表于: 。This blog post was originally published in January 2023 and was updated in June 2023.In PostgreSQL, the vacuum command is a maintenance task that helps to optimize database performance and reclaim...
本文介绍了PostgreSQL中的vacuum命令以及与之相关的维护任务和配置参数。vacuum命令用于优化数据库性能和回收磁盘空间,通过删除已删除或过时的行并更新查询规划器使用的统计信息来实现。