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Java反射的性能奥秘 | 小木屋 #57

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sisyphsu opened this issue May 13, 2019 · 1 comment
Open

Java反射的性能奥秘 | 小木屋 #57

sisyphsu opened this issue May 13, 2019 · 1 comment
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@sisyphsu
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https://sulin.me/2019/2WAF10Q.html

在多年以前开发DB中间件时，我曾经专门测试研究过Java反射的性能损耗问题，最终结论是Reflect带来的性能损耗对于基础组件来说不可忽视，因此最终采用Javassist的动态字节码方案解决这个性能损耗。最近在研发另一款基础组件时，突发奇想地打算放弃动态字节码，直接使用Reflect硬刚一波。直接调用与反射调用以下是非常简单的JMH测试代码，被测试的方法now直接返回当前时间戳：123456789
@jimojiangdahu
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玲玲，搁哪儿呢现在

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