https://answer.freetools.me/tags/%E4%B8%BB%E9%94%AE%E8%AE%BE%E8%AE%A1/ Recent content in 主键设计 on Answer Hugo -- 0.152.2 zh-cn 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/ 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/%E5%88%86%E5%B8%83%E5%BC%8Fid%E7%94%9F%E6%88%90%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BD%A0%E7%9A%84%E4%B8%BB%E9%94%AE%E9%80%89%E6%8B%A9%E6%AD%A3%E5%9C%A8%E6%AF%81%E6%8E%89%E6%95%B0%E6%8D%AE%E5%BA%93%E6%80%A7%E8%83%BD/ Sat, 07 Mar 2026 03:19:14 +0800 https://answer.freetools.me/%E5%88%86%E5%B8%83%E5%BC%8Fid%E7%94%9F%E6%88%90%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BD%A0%E7%9A%84%E4%B8%BB%E9%94%AE%E9%80%89%E6%8B%A9%E6%AD%A3%E5%9C%A8%E6%AF%81%E6%8E%89%E6%95%B0%E6%8D%AE%E5%BA%93%E6%80%A7%E8%83%BD/ 深入分析分布式ID生成方案的权衡取舍。从UUID v4在B-tree索引中的性能问题切入，对比数据库自增ID、Snowflake算法、UUID v7、KSUID、ULID等方案的优缺点，揭示时钟回拨问题的根源与解决策略，帮助开发者根据实际需求做出正确的ID方案选择。