本课程将为你讲解如何在生产环境下对Java应用做性能监控与调优；通过本课程，你将掌握多种性能监控工具应用，学会定位并解决诸如内存溢出、cpu负载飙高等问题；学会线上代码调试，Tomcat、Nginx，GC调优等手段； 读懂JVM字节码指令，分析源码背后原理，提升应对线上突发状况的能力

适合人群

具备至少一个项目开发和上线经验的同学

想学习生产环境下应用监控与调优技术的同学

想提高解决生产环境的各种性能问题的能力的同学

正准备晋级Java中高级工程师的同学

技术储备要求

有Java,Linux,Tomcat,Nginx等

Java初中级工程师必备技术基础

package com.yky.logic.test;

import java.io.File;

import org.apache.catalina.core.AprLifecycleListener;

import org.apache.catalina.core.StandardServer;

import org.apache.catalina.startup.Tomcat;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

/**

TOMCAT

*/

public class EmbeddedTomcat {

private final Logger log = LogManager.getLogger(EmbeddedTomcat.class);

private static String CONTEXT_PATH = "/cis";

private static String PROJECT_PATH = System.getProperty("user.dir");

private static String WEB_APP_PATH = PROJECT_PATH + File.separatorChar + "src/main/webapp";

private static int PORT = 8080;

private Tomcat tomcat = new Tomcat();

public void start() throws Exception {

tomcat.setPort(PORT);

tomcat.setBaseDir(WEB_APP_PATH);

tomcat.getHost().setAppBase(WEB_APP_PATH);

StandardServer server = (StandardServer) tomcat.getServer();

AprLifecycleListener listener = new AprLifecycleListener();

server.addLifecycleListener(listener);

tomcat.addWebapp(CONTEXT_PATH, WEB_APP_PATH);

tomcat.enableNaming();

tomcat.start();

tomcat.getServer().await();

log.info("============== Tomcat 启动 ==============");

}

public void stop() throws Exception {

tomcat.stop();

log.info("============== Tomcat 终止 ==============");

}

/

@param args

@throws Exception

*/

public static void main(String[] args) throws Exception {

EmbeddedTomcat embededTomcat = new EmbeddedTomcat();

embededTomcat.start();

}