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RSS订阅原创 redis arm镜像报错Unsupported system page size
redis arm镜像报错Unsupported system page size构建redis 5.0.4版本的arm镜像
2023-04-18 16:36:31
1623
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原创 Docker搭建Zookeeper集群
version: '3'services: pyq-zk1: image: zookeeper container_name: pyq-zk1 privileged: true restart: always ports: - 2181:2181 volumes: - ./zk1/conf:/conf - ./zk1/data:/data pyq-zk2: image: zookeeper con
2021-03-27 13:26:14
160
原创 Spring@EnableAsync和@Async异步方法调用实践和原理分析,@Async失效问题
@EnableAsync是什么？有什么作用？代码示例：//这里开启异步支持@EnableAsyncpublic class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); }}@Componentpublic class LogService { //标记这个方法为异步方法 @Async public v
2020-08-14 09:15:03
716
原创 JVM的垃圾回收器(GC)
1.堆内存模型1.分带收集的垃圾回收器1.1新生带1.1.1Serial1.1.2ParNew1.1.3Parallel Scavenge1.2老年代1.2.1Serial Old1.2.2CMS1.2.3Parallel Old内存溢出定位
2020-06-07 13:17:48
173
原创 synchronized锁升级过程
JAVA虚拟机堆synchronized的优化对象头与monitorMarkWord区是存在在JAVA对象头中的一个区域大小为8字节里面包含了1.锁信息2.GC信息3.HashCode(如果有调用)public class Demo1 { public static void main(String[] args) throws IOException { Object o = new Object(); System.out.println(Clas
2020-05-29 21:39:15
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原创 结合官方《JAVA虚拟机规范》来验证JVM中运行时常量池的存放位置
3.5.5 Runtime Constant PoolA runtime constant pool is a per-class or per-interface runtime representation of the constant_pool table in a class file (§4.4). It contains several kinds of constants, ranging from numeric literals known at compile time to met
2020-05-29 14:52:24
331
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