His flower had told him that she was only one of her kind in all universe. And here were five thousand of them, all alike, in one single garden!
Java代码在编译后会变成Java字节码,字节码被类加载器加载到JVM里,JVM执行字节码,最终需要转化为汇编指令在CPU上执行,Java中所使用的并发机制依赖于JVM的实现和CPU的指令。...
从上图可以看出,JVM的内存区域主要分为两个大块,一是内存共享区,一是内存线程私有区。
MySQL是目前最为流行的开放源码的数据库,随着其性能一直在被优化,安全机制也趋向成熟,更重要的是开源免费这个特点,受到了各大企业的热烈欢迎,近年来在各大榜单稳居第二,随时可能超过Oracle。来源网络不仅企业中使用的多,在...