https://answer.freetools.me/tags/%E6%8C%81%E4%B9%85%E6%80%A7/ Recent content in 持久性 on Answer Hugo -- 0.152.2 zh-cn Sun, 08 Mar 2026 15:52:41 +0800 https://answer.freetools.me/%E4%BB%8E%E5%B4%A9%E6%BA%83%E5%88%B0%E6%81%A2%E5%A4%8D%E6%95%B0%E6%8D%AE%E5%BA%93%E6%A3%80%E6%9F%A5%E7%82%B9%E6%9C%BA%E5%88%B6%E5%A6%82%E4%BD%95%E8%AE%A9-wal-%E4%B8%8D%E5%86%8D%E6%98%AF%E6%97%A0%E5%BA%95%E6%B4%9E/ Sun, 08 Mar 2026 15:52:41 +0800 https://answer.freetools.me/%E4%BB%8E%E5%B4%A9%E6%BA%83%E5%88%B0%E6%81%A2%E5%A4%8D%E6%95%B0%E6%8D%AE%E5%BA%93%E6%A3%80%E6%9F%A5%E7%82%B9%E6%9C%BA%E5%88%B6%E5%A6%82%E4%BD%95%E8%AE%A9-wal-%E4%B8%8D%E5%86%8D%E6%98%AF%E6%97%A0%E5%BA%95%E6%B4%9E/ 深入解析数据库检查点机制与 WAL 的协作原理，从 ARIES 算法到 PostgreSQL、MySQL、SQLite 的实现差异，探讨检查点调优的最佳实践。 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93%E5%B7%B2%E6%8F%90%E4%BA%A4%E7%9A%84%E4%BA%8B%E5%8A%A1%E4%B8%BA%E4%BD%95%E4%BC%9A%E4%B8%A2%E5%A4%B1%E4%BB%8Efsync%E5%88%B0%E5%BC%82%E6%AD%A5%E6%8F%90%E4%BA%A4%E7%9A%84%E6%8C%81%E4%B9%85%E6%80%A7%E6%9D%83%E8%A1%A1/ Sat, 07 Mar 2026 07:20:09 +0800 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93%E5%B7%B2%E6%8F%90%E4%BA%A4%E7%9A%84%E4%BA%8B%E5%8A%A1%E4%B8%BA%E4%BD%95%E4%BC%9A%E4%B8%A2%E5%A4%B1%E4%BB%8Efsync%E5%88%B0%E5%BC%82%E6%AD%A5%E6%8F%90%E4%BA%A4%E7%9A%84%E6%8C%81%E4%B9%85%E6%80%A7%E6%9D%83%E8%A1%A1/ 深入解析数据库持久性的技术本质。从事务提交后数据丢失的困惑出发，剖析fsync性能瓶颈、操作系统页面缓存、SSD写入缓存三层缓冲机制；详解MySQL innodb_flush_log_at_trx_commit、PostgreSQL synchronous_commit、Redis appendfsync、MongoDB write concern等配置的实际含义；分析group commit优化与SSD电源故障保护(PLP)的关键作用；提供不同场景下的持久性配置决策框架。