<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[ITcyt的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/ITcyt</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; ITcyt]]></copyright><item><title><![CDATA[硬核！万字长文图解 Java 并发锁：从 Synchronized 进化史到LongAdder 分段思想]]></title><link>https://blog.youkuaiyun.com/ITcyt/article/details/160436568</link><guid>https://blog.youkuaiyun.com/ITcyt/article/details/160436568</guid><author>ITcyt</author><pubDate>Sun, 26 Apr 2026 20:10:55 +0800</pubDate><description><![CDATA[Java并发锁机制演进：从synchronized到无锁编程 本文系统梳理了Java并发锁的发展历程与技术要点。首先介绍了锁的必要性，分析了并发编程的三大特性（原子性、可见性、有序性）。然后详细解析了synchronized从重量级锁到智能锁的进化过程，包括偏向锁、轻量级锁和重量级锁的升级机制。接着深入讲解了JUC显式锁与AQS框架原理，对比了公平锁与非公平锁的特性。文章还探讨了读写锁优化方案和StampedLock的性能优势，最后剖析了无锁编程的CAS机制及其典型问题。通过性能对比和选型指南，帮助开发者根]]></description><category></category></item><item><title><![CDATA[【无标题】记录aes加密登录]]></title><link>https://blog.youkuaiyun.com/ITcyt/article/details/142790666</link><guid>https://blog.youkuaiyun.com/ITcyt/article/details/142790666</guid><author>ITcyt</author><pubDate>Wed, 09 Oct 2024 16:45:27 +0800</pubDate><description><![CDATA[/ aes解密密匙。]]></description><category></category></item></channel></rss>