https://answer.freetools.me/tags/innodb/ Recent content in InnoDB on Answer Hugo -- 0.152.2 zh-cn Sun, 08 Mar 2026 15:44:51 +0800 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93buffer-pool%E4%B8%BA%E4%BD%95%E6%8B%92%E7%BB%9Dlru%E4%BB%8Ebelady%E6%9C%80%E4%BC%98%E5%88%B0clock-sweep%E7%9A%84%E5%85%AD%E5%8D%81%E5%B9%B4%E7%AE%97%E6%B3%95%E5%8D%9A%E5%BC%88/ Sun, 08 Mar 2026 15:44:51 +0800 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93buffer-pool%E4%B8%BA%E4%BD%95%E6%8B%92%E7%BB%9Dlru%E4%BB%8Ebelady%E6%9C%80%E4%BC%98%E5%88%B0clock-sweep%E7%9A%84%E5%85%AD%E5%8D%81%E5%B9%B4%E7%AE%97%E6%B3%95%E5%8D%9A%E5%BC%88/ 深入解析数据库Buffer Pool页面置换算法的演进历程。从1966年Belady最优算法的理论奠基，到LRU-K、2Q、LIRS、ARC等经典算法的设计哲学，再到InnoDB的Midpoint Insertion和PostgreSQL的Clock Sweep生产实践。揭示为什么简单的LRU无法满足数据库需求，以及各大数据库如何用精巧的工程设计解决缓存污染、顺序扫描等核心问题。 https://answer.freetools.me/b-%E6%A0%91%E7%B4%A2%E5%BC%95%E7%9A%84%E9%A1%B5%E5%88%86%E8%A3%82%E4%BB%8E%E9%A1%BA%E5%BA%8F%E6%8F%92%E5%85%A5%E7%9A%84%E4%BC%98%E9%9B%85%E5%88%B0%E9%9A%8F%E6%9C%BA%E5%86%99%E5%85%A5%E7%9A%84%E4%BB%A3%E4%BB%B7/ Sat, 07 Mar 2026 06:54:38 +0800 https://answer.freetools.me/b-%E6%A0%91%E7%B4%A2%E5%BC%95%E7%9A%84%E9%A1%B5%E5%88%86%E8%A3%82%E4%BB%8E%E9%A1%BA%E5%BA%8F%E6%8F%92%E5%85%A5%E7%9A%84%E4%BC%98%E9%9B%85%E5%88%B0%E9%9A%8F%E6%9C%BA%E5%86%99%E5%85%A5%E7%9A%84%E4%BB%A3%E4%BB%B7/ 深入解析数据库B+树索引页分裂的底层机制。从InnoDB的页面组织结构出发，详细分析顺序插入与随机插入产生的截然不同的页分裂行为，揭示UUID主键导致性能下降的根本原因，并对比不同数据库实现（MySQL、PostgreSQL、SQL Server、DB2）的分裂策略差异。 https://answer.freetools.me/%E4%B8%BA%E4%BB%80%E4%B9%88%E6%95%B0%E6%8D%AE%E5%BA%93%E7%B4%A2%E5%BC%95%E9%80%89%E6%8B%A9b-%E6%A0%91%E8%80%8C%E4%B8%8D%E6%98%AFhash%E4%BB%8E%E7%A3%81%E7%9B%98io%E7%89%B9%E6%80%A7%E5%88%B0%E8%8C%83%E5%9B%B4%E6%9F%A5%E8%AF%A2%E7%9A%84%E6%8A%80%E6%9C%AF%E7%9C%9F%E7%9B%B8/ Sat, 07 Mar 2026 05:05:02 +0800 https://answer.freetools.me/%E4%B8%BA%E4%BB%80%E4%B9%88%E6%95%B0%E6%8D%AE%E5%BA%93%E7%B4%A2%E5%BC%95%E9%80%89%E6%8B%A9b-%E6%A0%91%E8%80%8C%E4%B8%8D%E6%98%AFhash%E4%BB%8E%E7%A3%81%E7%9B%98io%E7%89%B9%E6%80%A7%E5%88%B0%E8%8C%83%E5%9B%B4%E6%9F%A5%E8%AF%A2%E7%9A%84%E6%8A%80%E6%9C%AF%E7%9C%9F%E7%9B%B8/ 为什么数据库索引选择B+树而不是Hash？从磁盘IO特性到范围查询的技术真相 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93%E6%AD%BB%E9%94%81%E4%B8%BA%E4%BD%95%E5%A6%82%E6%AD%A4%E9%9A%BE%E4%BB%A5%E6%A0%B9%E9%99%A4%E4%BB%8E%E6%A3%80%E6%B5%8B%E7%AE%97%E6%B3%95%E5%88%B0%E9%A2%84%E9%98%B2%E7%AD%96%E7%95%A5%E7%9A%84%E4%BA%94%E5%8D%81%E5%B9%B4%E5%8D%9A%E5%BC%88/ Sat, 07 Mar 2026 01:56:28 +0800 https://answer.freetools.me/%E6%95%B0%E6%8D%AE%E5%BA%93%E6%AD%BB%E9%94%81%E4%B8%BA%E4%BD%95%E5%A6%82%E6%AD%A4%E9%9A%BE%E4%BB%A5%E6%A0%B9%E9%99%A4%E4%BB%8E%E6%A3%80%E6%B5%8B%E7%AE%97%E6%B3%95%E5%88%B0%E9%A2%84%E9%98%B2%E7%AD%96%E7%95%A5%E7%9A%84%E4%BA%94%E5%8D%81%E5%B9%B4%E5%8D%9A%E5%BC%88/ 深入剖析数据库死锁检测与预防的五十年技术演进：从Coffman四个必要条件到Wait-for Graph检测算法，从Wait-Die/Wound-Wait预防策略到MySQL、PostgreSQL、SQL Server的实现差异。基于IEEE/ACM论文、官方文档和真实生产案例，系统梳理死锁检测的开销与权衡，以及应用层如何设计才能从根本上避免死锁。