Stewart的专栏

okeeper最早是Hadoop的一个子项目，主要为Hadoop生态系统中一些列组件提供统一的分布式协作服务，在2010年10月升级成Apache Software Foundation(ASF)顶级项目，它主要提供以下的四个功能： 功能名 组管理服务 分布式配置服务 分布式同步服务 分布式命名服务

另一本介绍struts开发的参考书，深入介绍了三层架构中的web层，以及struts开发的细节 pdf 英文 417 Table of Contents Chapter 1 Introduction...............................................................................9 Brief History of the Web ................................................................................................ 9 What are Java Servlets?................................................................................................ 11 JavaServer Pages Technology ...................................................................................... 14 JSP Model 1 and Model 2 Architectures ...................................................................... 16 Why is Model-View-Controller So Important?............................................................ 18 What is a Framework?.................................................................................................. 20 Creation of the Struts Framework ................................................................................ 21 Alternatives to Struts .................................................................................................... 22 Chapter 2 Inside the Web Tier ................................................................29 An Architecture Overview ........................................................................................... 29 The HTTP Request/Response Phase ............................................................................ 34 Struts and Scope ........................................................................................................... 40 Using URL Parameters................................................................................................. 42 Forward versus Redirect............................................................................................... 42 Chapter 3 Overview of the Struts Framework ......................................51 A Banking Account Example....................................................................................... 51 Looking at the Big Picture............................................................................................ 57 Struts Controller Components ...................................................................................... 58 Struts Model Components ............................................................................................ 66 The Struts View Components....................................................................................... 70 Multiple Application Support....................................................................................... 81 Summary ...................................................................................................................... 81 Chapter 4 Configuring the Struts Application ......................................83 Introduction to the Storefront Application ................................................................... 83 What is a Web Application?......................................................................................... 85 The Web Application Directory Structure.................................................................... 86 Web Application Deployment Descriptor .................................................................... 88 Configuring the web.xml file for Struts ........................................................................ 91 The Struts Configuration File..................................................................................... 101 The org.apache.struts.config Package........................................................................ 102 Struts Console Tool.................................................................................................... 121 Reloading the Configuration Files.............................................................................. 122 Chapter 5 Struts Controller Components ............................................123 The Controller Mechanism......................................................................................... 124 The Utilities Classes................................................................................................... 151 Chapter 6 Struts Model Components ...................................................155 The “M” in MVC ....................................................................................................... 155 What is a Business Object? ........................................................................................ 160 Persistence.................................................................................................................. 162 What does Struts Offer For the Model?...................................................................... 163 Building the Storefront Model.................................................................................... 164 Chapter 7 Struts View Components......................................................190 What exactly is a View? ............................................................................................. 190 What are ActionForms?.............................................................................................. 197 Using ActionErrors..................................................................................................... 207 Performing Presentation Validation ........................................................................... 212 Using Dynamic ActionForms..................................................................................... 213 Looking Ahead to JavaServer Faces .......................................................................... 215 Chapter 9 Extending the Struts Framework........................................218 What are Extension Points?........................................................................................ 218 General Extension Points ........................................................................................... 219 Controller Extension Points........................................................................................ 222 Extending View Components..................................................................................... 227 Extending the Model Components ............................................................................. 228 Downsides to Extending the Framework.................................................................... 231 Chapter 10 Exception Handling ..............................................................232 Java Exception Handling............................................................................................ 232 System versus Application Exceptions....................................................................... 237 Using Chained Exceptions ......................................................................................... 238 Exception Handling provided by Struts...................................................................... 241 Tying Up the Loose Ends ........................................................................................... 253 Exceptions in Custom Tags ........................................................................................ 254 Internationalized Exception Handling ........................................................................ 254 Conclusion.................................................................................................................. 255 Chapter 11 Using the Struts Validator ...................................................256 The Need for a Validation Framework....................................................................... 256 Installing and Configuring the Validator.................................................................... 257 Overview of Regular Expressions .............................................................................. 265 Using an ActionForm with the Validator............................................................... 265 Using the Validator Framework ................................................................................. 269 Creating your own Validation Rules .......................................................................... 270 The Validator and JSP Custom Tags.......................................................................... 272 Internationalizing the Validation ................................................................................ 275 Using the Validator Outside of Struts......................................................................... 276 Chapter 12 Internationalization and Struts ...........................................279 What is Internationalization?...................................................................................... 280 Support for I18N in Java ............................................................................................ 281 Internationalizing your Struts Applications................................................................ 288 Exception Handling and Internationalization ............................................................. 292 13 ............................................................................................293 Struts and Enterprise JavaBeans (EJB).............................293 Implementing the Storefront Service Using EJB........................................................ 295 Interfacing Struts to EJB ............................................................................................ 308 Chapter 14 Using Tiles .............................................................................320 Understanding Templates........................................................................................... 320 Installing and Configuring Tiles................................................................................. 326 Overview of Tiles....................................................................................................... 329 The Tiles Tag Library................................................................................................. 332 Using Definitions ....................................................................................................... 340 Internationalization Support with Tiles ...................................................................... 344 Chapter 16 Addressing Performance......................................................346 What is Good Performance?....................................................................................... 346

本书深入探讨java I/O编程高级特性，以及如何使用这些特性去提高编码效率。虽然是jdk1.4的版本，但是对提高我们的开发技巧有很大帮助 pdf 英文版 254页 This book is about advanced input/output on the Java platform, specifically I/O using the Java 2 Standard Edition (J2SE) Software Development Kit (SDK), Version 1.4 and later. The 1.4 release of J2SE, code-named Merlin, contains significant new I/O capabilities that we'll explore in detail. These new I/O features are primarily collected in the java.nio package (and its subpackages) and have been dubbed New I/O (NIO). In this book, you'll see how to put these exciting new features to work to greatly improve the I/O efficiency of your Java applications. Dedication ............................................................................................................................. 1 Preface .................................................................................................................................. 2 Organization...................................................................................................................... 3 Who Should Read This Book............................................................................................. 5 Software and Versions ....................................................................................................... 5 Conventions Used in This Book......................................................................................... 6 How to Contact Us ............................................................................................................. 7 Acknowledgments.............................................................................................................. 8 Chapter 1. Introduction..................................................................................................... 10 1.1 I/O Versus CPU Time ................................................................................................ 10 1.2 No Longer CPU Bound.............................................................................................. 11 1.3 Getting to the Good Stuff ........................................................................................... 12 1.4 I/O Concepts............................................................................................................... 13 1.5 Summary .................................................................................................................... 21 Chapter 2. Buffers .............................................................................................................. 22 2.1 Buffer Basics .............................................................................................................. 23 2.2 Creating Buffers ......................................................................................................... 36 2.3 Duplicating Buffers .................................................................................................... 38 2.4 Byte Buffers ............................................................................................................... 40 2.5 Summary .................................................................................................................... 52 Chapter 3. Channels........................................................................................................... 54 3.1 Channel Basics ........................................................................................................... 55 3.2 Scatter/Gather............................................................................................................. 62 3.3 File Channels.............................................................................................................. 67 3.4 Memory-Mapped Files............................................................................................... 80 3.5 Socket Channels ......................................................................................................... 91 3.6 Pipes ......................................................................................................................... 109 3.7 The Channels Utility Class....................................................................................... 114 3.8 Summary .................................................................................................................. 115 Chapter 4. Selectors ......................................................................................................... 117 4.1 Selector Basics ......................................................................................................... 117 4.2 Using Selection Keys ............................................................................................... 125 4.3 Using Selectors......................................................................................................... 128 4.4 Asynchronous Closability ........................................................................................ 137 4.5 Selection Scaling ...................................................................................................... 138 4.6 Summary .................................................................................................................. 143 Chapter 5. Regular Expressions ..................................................................................... 145 5.1 Regular Expression Basics ....................................................................................... 145 5.2 The Java Regular Expression API............................................................................ 147 5.3 Regular Expression Methods of the String Class..................................................... 168 5.4 Java Regular Expression Syntax .............................................................................. 169 5.5 An Object-Oriented File Grep.................................................................................. 172 5.6 Summary .................................................................................................................. 178 Chapter 6. Character Sets ............................................................................................... 180 6.1 Character Set Basics................................................................................................. 180 6.2 Charsets .................................................................................................................... 182 6.3 The Charset Service Provider Interface ................................................................... 201 6.4 Summary .................................................................................................................. 214 Appendix A. NIO and the JNI......................................................................................... 215 Appendix B. Selectable Channels SPI ............................................................................ 217 Appendix C. NIO Quick Reference ................................................................................ 220 C.1 Package java.nio ...................................................................................................... 220 C.2 Package java.nio.channels ....................................................................................... 227 C.3 Package java.nio.channels.spi ................................................................................. 240 C.4 Package java.nio.charset.......................................................................................... 242 C.5 Package java.nio.charset.spi .................................................................................... 246 C.6 Package java.util.regex ............................................................................................ 246 Colophon ........................................................................................................................... 250

一本通俗易懂的unix入门书籍 英文版 chm格式 方便阅读 简介： Learning the UNIX Operating System teaches the basic system utility commands to get you started with UNIX. Instead of overwhelming you with a lot of details, we want you to be comfortable in the UNIX environment as soon as possible. So we cover the most useful features of a command instead of describing all its options in detail. 目录: Table of Contents Preface Chapter 1: Getting Started Chapter 2: Using Window Systems Chapter 3: Your UNIX Account Chapter 4: File Management Chapter 5: Redirecting I/O Chapter 6: Multitasking Chapter 7: Where to Go from Here Appendix A: Reading List Appendix B: Reference

Practical UNIX & Internet Security<br>英文版 chm 号称1004页<br><br>一本老书，但是unix的基本原理，与网络安全的基本原理还是值得学习的<br><br>Table of Contents<br>Preface<br><br><br>Part I: Computer Security Basics<br>Chapter 1: Introduction<br>Chapter 2: Policies and Guidelines<br><br><br><br>Part II: User Responsibilities<br>Chapter 3: Users and Passwords<br>Chapter 4: Users, Groups, and the Superuser<br>Chapter 5: The UNIX Filesystem<br>Chapter 6: Cryptography<br><br><br><br>Part III: System Security<br>Chapter 7: Backups<br>Chapter 8: Defending Your Accounts<br>Chapter 9: Integrity Management<br>Chapter 10: Auditing and Logging<br>Chapter 11: Protecting Against Programmed Threats<br>Chapter 12: Physical Security<br>Chapter 13: Personnel Security<br><br><br><br>Part IV: Network and Internet Security<br>Chapter 14: Telephone Security<br>Chapter 15: UUCP<br>Chapter 16: TCP/IP Networks<br>Chapter 17: TCP/IP Services<br>Chapter 18: WWW Security<br>Chapter 19: RPC, NIS, NIS+, and Kerberos<br>Chapter 20: NFS<br><br><br><br>Part V: Advanced Topics<br>Chapter 21: Firewalls<br>Chapter 22: Wrappers and Proxies<br>Chapter 23: Writing Secure SUID and Network Programs<br><br><br><br>Part VI: Handling Security Incidents<br>Chapter 24: Discovering a Break-in<br>Chapter 25: Denial of Service Attacks and Solutions<br>Chapter 26: Computer Security and U.S. Law<br>Chapter 27: Who Do You Trust?<br><br><br><br>Part VII: Appendixes<br><br>Appendix A: UNIX Security Checklist<br>Appendix B: Important Files<br>Appendix C: UNIX Processes<br>Appendix D: Paper Sources<br>Appendix E: Electronic Resources<br>Appendix F: Organizations<br>Appendix G: Table of IP Services<br><br><br><br>

英文版 pdf<br><br>这是为准备linux ret hat 认证工程师考试的讲义<br>非常精华，一共只有16页<br><br>Abstract:<br>This study guide will help you to prepare for Linux/Unix Exam RH300,<br>Red Hat Certified Engineer. Exam topics include Hardware and<br>Installation, Configuration and Administration, Kernel Services,<br>Networking Services, X Window System, Security, Routers, Firewalls,<br>Clusters and Troubleshooting. The exam has three components: Debug<br>(2.5 hrs), Multiple Choice (1 hr) and Server Install and Network<br>Services Setup (2.5 hrs.)<br><br><br>目录 <br>Contents:<br>Contents: .......................................................... Error! Bookmark not defined.<br>Pre-Install..................................................................................................... 2<br>Installation and Troubleshooting....................................................................... 4<br>System Configuration ..................................................................................... 8<br>X Windows System......................................................................................... 9<br>Linux Shells and Commands / Utilities..............................................................11<br>Linux Shell Comparison Table.......................................................................11<br>Basic Linux Commands and Utilities .................................................................12<br>Linux Networking ..........................................................................................14<br>System Administration and Security ................................................................15

英文pdf 23页<br/>Zope，Z Object Publishing Environment，它既是http服务器，又是数据库，又包含脚本编程语言。Zope是一种支持多种平台开源的Web应用服务器软件，它提供了完善的功能和强大的动力，适用于构建各种类型的Web应用，从小型网站到企业级分布式网络应用都有Zope的用武之地。Zope在许多方面都超过了ASP、PHP、JSP等传统方法，是一套优秀而完整的解决方案。本专题介绍Zope与流行的数据库MySql的集成。<br/><br/><br/>As a recent convert to Zope from PHP, I was curious: could Zope really give me all the capabilities I was used<br/>to in PHP?<br/>I decided to find out, by using one of my most common activities with PHP as the benchmark: connecting to<br/>and retrieving records from a MySQL database. As it turned out, Zope manages this quite well, and it's also<br/>nowhere near as complicated as you might think. And so, over the course of this article, I'm going to show<br/>you how to hook your Zope server up to a MySQL database, and write DTML code that allows you to retrieve<br/>and manipulate MySQL table records using standard SQL commands. If this sounds interesting, keep reading.

UNIX程序员手册，是unix下编程必备，就不用多说了，虽然版本稍微老点，但是仍然非常需要在手头备上一本。<br/>英文pdf版,336页<br/><br/><br/>UNIX PROGRAMMER’S MANUAL<br/>Seventh Edition, Volume 2A<br/>January, 1979<br/><br/>Bell Telephone Laboratories, Incorporated<br/>Murray Hill, New Jersey

此文档总结了Unix最常用的一些命令英文pdf 23页，清晰明了，非常实用。This document summarizes the most generally useful commands of the Unix computer systems available at Mizzou. Formore detailed information consult the Unix man pages available on all the Unix operating systems. Specific Unix systemsoften have considerable on-line documentation besides the Unix man pages. Consult the system-specific documentation.

eclipse的EASIE jboss服务器插件 的安装配置步骤<br/>英文pdf版 6页<br/>非常简单，清晰<br/>This article introduces practical J2EE server-side development techniques using Eclipse with JBoss Server 2.4.4 integrated with Tomcat 4.0.1 (JBoss). We’ll demonstrate how to install, configure, and run the EASIE JBoss Plugin for Eclipse in preparation to performing J2EE server-side development. Additionally, use of this plugin with JBoss 3.0 Alpha and Beta will also be discussed.

pdf英文版 357页1999年第10届效能大奖 本书讲述了作者在学习设计模式过程中所积累的个人经验。很不错的一本书。解释了各个设计模式是如何总结整理出来的，并给出了具体的应用示例。所用的英文语句简单易懂。【内容简介】本书讲述了作者在学习设计模式过程中所积累的个人经验。书中包含很多实际的和可应用的实例，教你如何使用模式解决普通的编程问题，以及解释如何利用模式来进行先进的软件设计。本书清晰地演示了模式如何使整个开发过程变得更容易，还解释了面对对象设计的关键原则以及特定模式的概念和优势。通过直观的C++和Java实例，本书阐明了使用模式的原因以及如何使用模式，并解释了模式的实现。

4人帮设计模式，不用多介绍了，这一版是html版，非常方便阅读。

The Solaris kernel provides a great deal of user-configurable control over the system<br/>TCP/IP stack. Everything from cache table lifetimes to the number of TCP connections<br/>that the system can address are controllable. However, without understanding the<br/>underlying need for tuning these kernel parameters many system administrators<br/>choose to ignore them - thereby leaving their systems vulnerable to a resourceful<br/>assailant.