Optimizing Java_Practical Techniques for Improving JVM Application Performance(2018.05).A4.pdf 预览文字版 Currently, no books exist that focus on the practicalities of Java application performance tuning, as opposed to the theory and internals of Java virtual machines. This practical guide is the "missing link" that aims to move Java performance tuning from the realm of guesswork and folklore to an experimental science.

JAVA JVM使用的字节码文件查看器，Binary Viewer可以以二进制，十六进制，八进制，十进制和文本格式（多种编码）显示文件内容，因此，您可以浏览二进制文件，通常在使用标准Windows查看器/编辑器（如记事本，Word，Excel等）时看不到二进制文件。

本人实践，物超所值，一站式解决jmeter负载机环境问题，问题集合含： 1 slave机器的自定义端口号配置； 2 负载机（Slave）找不到参数文； 3 无数据，依赖文件报错的问题； 4 Server failed to start: java.rmi.server.ExportException: Listen failed on port…找不到指定文件； 5 Server failed to start: java.rmi.RemoteException: Cannot start. localhost.localdomain is a loopback address.An error occurred: Cannot start. localhost.localdomain is a loopback address.

JVM，MIB，可通过SNMP协议监控JVM运行情况

一.java内存结构 2 二 垃圾收集算法: 3 三 JVM参数 4 四 JVM的垃圾回收集器 7 五 常用参数设置 7

zabbix自动发现JAVA进程，并进行自动添加监控JAVA 进程的JVM数据，统计分析告警监控。 支持多种中间件，tomcat、weblogic、微服务方式部署JAVA应用监控。 自带发现脚本和监控脚本，以及zabbix导入模板。

JVM垃圾回收，为大家整理了JVM原理以及各种调优策略

Java虚拟机深入了解，吃透JVM，清晰扫描

JVM体系结构与GC调优总结，很详尽，面试必备呀，值得拥有！

Make the most of Kotlin by leveraging design patterns and best practices to build scalable and high performing apps Key Features Understand traditional GOF design patterns to apply generic solutions Shift from OOP to FP; covering reactive and concurrent patterns in a step-by-step manner Choose the best microservices architecture and MVC for your development environment Book Description Design patterns enable you as a developer to speed up the development process by providing you with proven development paradigms. Reusing design patterns helps prevent complex issues that can cause major problems, improves your code base, promotes code reuse, and makes an architecture more robust. The mission of this book is to ease the adoption of design patterns in Kotlin and provide good practices for programmers. The book begins by showing you the practical aspects of smarter coding in Kotlin, explaining the basic Kotlin syntax and the impact of design patterns. From there, the book provides an in-depth explanation of the classical design patterns of creational, structural, and behavioral families, before heading into functional programming. It then takes you through reactive and concurrent patterns, teaching you about using streams, threads, and coroutines to write better code along the way By the end of the book, you will be able to efficiently address common problems faced while developing applications and be comfortable working on scalable and maintainable projects of any size What you will learn Get to grips with Kotlin principles, including its strengths and weaknesses Understand classical design patterns in Kotlin Explore functional programming using built-in features of Kotlin Solve real-world problems using reactive and concurrent design patterns Use threads and coroutines to simplify concurrent code flow Understand antipatterns to write clean Kotlin code, avoiding common pitfalls Learn about the design considerations necessary while choosing between architectures Who This Book Is For This book is for developers who would like to master design patterns with Kotlin to build efficient and scalable applications. Basic Java or Kotlin programming knowledge is assumed Table of Contents Getting Started with Kotlin Working with Creational Patterns Understanding Structural Patterns Getting familiar with Behavioral Patterns Pattern implementation using Functional Programming Exploring Streams Staying reactive Introduction: Threads and Coroutines Designed for concurrency Anti-patterns and Idioms Simplifying microservices and MVC