<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>索引 on 梦兽编程</title><link>https://rexai.top/tags/%E7%B4%A2%E5%BC%95/</link><description>Recent content in 索引 on 梦兽编程</description><generator>Hugo -- 0.160.1</generator><language>zh-cn</language><copyright>梦兽编程</copyright><lastBuildDate>Fri, 17 Apr 2026 10:00:00 +0800</lastBuildDate><atom:link href="https://rexai.top/tags/%E7%B4%A2%E5%BC%95/index.xml" rel="self" type="application/rss+xml"/><item><title>PostgreSQL 18 的 UUIDv7：你的索引终于能喘口气了</title><link>https://rexai.top/infrastructure/postgresql/2025-04-16-postgresql-18-uuidv7-index-performance/</link><pubDate>Fri, 17 Apr 2026 10:00:00 +0800</pubDate><guid>https://rexai.top/infrastructure/postgresql/2025-04-16-postgresql-18-uuidv7-index-performance/</guid><description>PostgreSQL 18 原生支持 UUIDv7，索引性能提升 50%。告别 UUIDv4 的碎片困扰，让主键既有序又唯一。</description></item></channel></rss>