Inne
Xavier Jean-Marie Hacking, David Lai, XJ Hacking
Xcelsius 2008 was recently included in SAP’s BusinessObjects 4.0 family, rebranding “Xcelsius Enterprise” as “SAP BusinessObjects Dashboards 4.0”. With features like flexible design and what-if scenarios, the powerful dashboarding software allows enterprises to make business decisions at a glance, and this book allows you to go far beyond the basics of these techniques. This cookbook full of practical and applicable recipes will enable you to use the full latest capabilities of Dashboard Design to visually transform your business data. A wide range of recipes will equip you with the knowledge and confidence to perform tasks like configuring charts, creating drill- downs, making component colors dynamic, using alerts in maps, building pop-up screens, setting up What-If scenarios, and many more.The recipes begin by covering best practices for using the Dashboard Design spreadsheet, the data-model, and the connection with the components on the canvas, later moving on to some from-the-trenches tricks for using Excel within Dashboard Design. The book then guides you through the exploration of various data visualization components and dashboard interactivity, as well as offering recipes on using alerts, dashboard connectivity, and making the most of the aesthetics of the dashboard. Finally, the recipes conclude by considering the most important add-ons available for Dashboard Design and enabling you to perform relevant and useful tasks straight away.
Scala Design Patterns. Write efficient, clean, and reusable code with Scala
Ivan Nikolov
Scala has become increasingly popular in many different IT sectors. The language is exceptionally feature-rich which helps developers write less code and get faster results. Design patterns make developer’s lives easier by helping them write great software that is easy to maintain, runs efficiently and is valuable to the company or people concerned.You will learn about the various features of Scala and be able to apply well-known, industry-proven design patterns in your work. The book starts off by focusing on some of the most interesting features of Scala while using practical real-world examples. We will also cover the popular Gang of Four design patterns and show you how to incorporate functional patterns effectively. By the end of this book, you will have enough knowledge and understanding to quickly assess problems and come up with elegant solutions.
Vytautas Jancauskas
Scala is a statically typed, Java Virtual Machine (JVM)-based language with strong support for functional programming. There exist libraries for Scala that cover a range of common scientific computing tasks – from linear algebra and numerical algorithms to convenient and safe parallelization to powerful plotting facilities. Learning to use these to perform common scientific tasks will allow you to write programs that are both fast and easy to write and maintain.We will start by discussing the advantages of using Scala over other scientific computing platforms. You will discover Scala packages that provide the functionality you have come to expect when writing scientific software. We will explore using Scala's Breeze library for linear algebra, optimization, and signal processing. We will then proceed to the Saddle library for data analysis. If you have experience in R or with Python's popular pandas library you will learn how to translate those skills to Saddle. If you are new to data analysis, you will learn basic concepts of Saddle as well. Well will explore the numerical computing environment called ScalaLab. It comes bundled with a lot of scientific software readily available. We will use it for interactive computing, data analysis, and visualization. In the following chapters, we will explore using Scala's powerful parallel collections for safe and convenient parallel programming. Topics such as the Akka concurrency framework will be covered. Finally, you will learn about multivariate data visualization and how to produce professional-looking plots in Scala easily. After reading the book, you should have more than enough information on how to start using Scala as your scientific computing platform
Michael Badger, Lifelong Kindergarten Group
If you have the imaginative power to design complex multimedia projects but can't adapt to programming languages, then Scratch 1.4: Beginner's Guide is the book for you. Imagine how good you'll feel when you drag-and-drop your way to interactive games, stories, graphic artwork, computer animations, and much more using Scratch even if you have never programmed before.This book provides teachers, parents, and new programmers with a guided tour of Scratch's features by creating projects that can be shared, remixed, and improved upon in your own lesson plans. Soon you will be creating games, stories, and animations by snapping blocks of code together.When you program you solve problems. In order to solve problems, you think, take action, and reflect upon your efforts. Scratch teaches you to program using a fun, accessible environment that's as easy as dragging and dropping blocks from one part of the screen to another.In this book you will program games, stories, and animations using hands-on examples that get you thinking and tinkering. For each project, you start with a series of steps to build something. Then you pause to put our actions into context so that you can relate our code to the actions on Scratch's stage. Throughout each chapter, you'll encounter challenges that encourage you to experiment and learn.One of the things you're really going to love is that, as you begin working through the examples in the book, you won't be able to stop your imagination and the ideas will stream as fast as you can think of them. Write them down. You'll quickly realize there are a lot of young minds in your home, classroom, or community group that could benefit from Scratch's friendly face. Teach them, please.
Cedric Gemy, Christoph Schafer
Scribus is an Open Source program that brings award-winning and inexpensive professional page layout to desktop computers with a combination of press-ready output and new approaches to page layout. Creating professional-looking documents using Scribus is not a cakewalk, especially with so many features at your disposal, it’s hard to know where to get started! Scribus Beginners guide walks users step by step through common projects, such as creating a brochure,newsletter, business cards and so on. It also includes guidelines on starting a web newsletter and online PDF (Adobe Acrobat format) newsletter along with basic scripting to extend Scribus as per your requirements. This book begins with the simplest tasks and brings you progressively to adapt your workflow to the most efficient tools. It commences with the description of the graphic tool chain and an overall chapter on how to draw a simple and attractive business card. You'll then see how to manage the pages of your document and organized their structure thanks to guides. Then being invited to fill them with text, you'll be able to import, set text style as well as use replacement and hyphenation tool. Pictures or vector drawing will be added to the documents too. You'll be taught to choose the best format at the best time, modify or distort the shapes to get very custom documents. You will also learn how Scribus handles advanced color features such as transparencies, overprinting, spot colors precisely and be sure they are set well for a print result without bad surprise. At the end, you'll know to produce a perfect PDF file, be it for print jobs or web with effects, buttons and javascript interactivity, extend the document capacities as well as Scribus tools with simple programming especially with the python language.
UNMESH GUNDECHA
This book is an incremental guide that will help you learn and use the advanced features of the Selenium toolset including the WebDriver API in various situations to build a reliable test automation. You start off by setting up the test development environment and gain tips on the advanced locater strategy and the effective use of the Selenium WebDriver API. After that, the use of design patterns such as data - driven tests and PageFactory are demonstrated. You will then be familiarised with extending Selenium WebDriver API by implementing custom tasks and setting up your own distributed environment to run tests in parallel for cross-browser testing.Finally, we give you some tips on integrating Selenium WebDriver with other popular tools and testing mobile applications. By the end of this book, you will have learned enough to solve complex testing issues on your own.
UNMESH GUNDECHA
Web technologies are becoming increasingly complex and there is a need to test your web applications against a vast number of browsers and platforms, so you need to build highly reliable and maintainable test automation. This book will help you test your web applications effectively and efficiently with Selenium WebDriver.Selenium Testing Tools Cookbook is an incremental guide that will help you learn and use advanced features of Selenium WebDriver API in various situations for building reliable test automation. You will learn how to effectively use features of Selenium using simple and detailed examples. This book will also teach you best practices, design patterns, and how to extend Selenium.Selenium Testing Tools Cookbook shows developers and testers who already use Selenium, how to go to the next step and build a highly maintainable and reliable test framework using advanced features of the tool.The book starts with tips on advanced location strategy and effective use of Selenium WebDriver API. Then it demonstrates the use of design patterns such as Data Driven Tests and PageFactory for building maintainable test automation. It also explains extending Selenium WebDriver API along with implementing custom tasks and setting up your own distributed environment to run tests in parallel.It concludes with tips on integrating Selenium WebDriver with other popular tools, testing mobile web applications, and capturing videos of test runs. This books provides examples in Java, C#, Ruby, and Python.Selenium Testing Tools Cookbook will help you in building a highly robust and maintainable test automation framework from start to finish.
Guido Schmutz, Peter Welkenbach, Guido Schmutz (Euro)
Service Oriented Architecture (SOA) refers to building systems that offer applications as a set of independent services that communicate and inter-operate with each other effectively. Such applications may originate from different vendor, platform, and programming language backgrounds, making successful integration a challenging task. This book enables you to integrate application systems effectively, using the Trivadis Integration Architecture Blueprint, which is supported by real-world scenarios in which this Integration Blueprint has proved a success.This book will enable you to grasp all of the intricacies of the Trivadis Architecture Blueprint, including detailed descriptions of each layer and component. It is a detailed theoretical guide that shows you how to implement your own integration architectures in practice, using the Trivadis Integration Architecture Blueprint. The main focus is on explaining and visualizing the blueprint, including comprehensive descriptions of all of its layers and components. It also covers the more basic features of integration concepts for less experienced specialists, as well as shedding light on the future of integration technologies, such as XTP and Grid Computing. You will learn about EII and EAI, OGSi, as well as base technologies related to the implementation of solutions based on the Blueprint, such as JCA, JBI, SCA and SDO.The book begins by covering fundamental integration for those less familiar with the concepts and terminology, and then dives deep into explaining the different architecture variants and the future of integration technologies. Base technologies like JCA and SCA will be explored along the way, and the structure of the Trivadis Integration Architecture Blueprint will be described in detail, as will the intricacies of each component and layer. Other content includes discovering and comparing traditional and modern SOA driven integration solutions, implementing transaction strategies and process modeling, and getting to grips with EDA developments in SOA. Finally, the book considers how to map software from vendors like Oracle and IBM to the blueprint in order to compare the solutions, and ultimately integrate your own projects successfully.
ServiceNow: Building Powerful Workflows. Automating IT Service Management
Tim Woodruff, Martin Wood, Ashish Rudra Srivastava
ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications, giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done.This course will show you how to put important ServiceNow features to work in the real world. We will introduce key concepts and examples on managing and automating IT services, and help you build a solid foundation towards this new approach. You will then learn more about the power of tasks, events, and notifications. We’ll then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Further on, you’ll learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. At the end of this course, you will acquire immediately applicable skills to rectify everyday problems encountered on the ServiceNow platform.The course provides you with highly practical content explaining ServiceNow from the following Packt books:1. Learning ServiceNow 2. ServiceNow Cookbook3. Mastering ServiceNow, Second Edition
Vibor Cipan, Vibor Cipan (EUR)
Silverlight makes it much easier to build web applications with highly usable, interactive, and exciting user interfaces. However, with so many new options open to designers and developers, making the best use of the tools available is not always so easy. It's ease of use and rapid development process has left one area completely uncovered— how to design, build, and implement professional and usable interfaces, and create an enjoyable user experience and interaction.Written by a Microsoft MVP and Silverlight Prototyping Specialist, this book is the first and only book on developing Silverlight User Interfaces. Clear, step-by-step instructions show how to build all the user interface elements that users look forward to in a cutting edge app. This book offers essential recipes, with each recipe depicting the commonly used user interface patterns built with Silverlight, and in some cases, with WPF to showcase the possibilities.The author's experience in designing and developing user interfaces enables him to share insights on creating professional interfaces in a clear and friendly way. The book starts off with recipes dealing with fixed and fluid layouts, building custom command link controls, working with navigation, and collapsible panels, and then moves on to the more advanced topics such as calendars, alternating row colors, and task panes. The author covers a number of different UI patterns, controls, and approaches accompanied by XAML and C# code where needed (and explained), along with usage context and practical, proven, and professional techniques for specific controls and patterns.From maps to task panes, and web cam support to pixel shaders, this Cookbook provides you with a rich selection of Silverlight UI recipes. It covers all that you need to know in order to design and implement a user interface, together with professional user experience and interface guidelines to make your solutions and applications pleasurable for your users.The author has found himself in the role of both, a designer and a developer, at different points in his professional career, and his motive was to create a book that will serve as a useful resource for designers and developers trying to find their way with Silverlight and Expression Blend.By the end of the book, you will be able to create a rich, professional, and standards-compliant user interface.
David Overton
Small Businesses need to capitalize on the investments they make in IT to drive the business forward. SBS 2008 is uniquely positioned to deliver, but a poor implementation becomes a hindrance rather than a benefit to your business. Well implemented solutions enable your business to appear larger, yet more dynamic than many enterprises.It's easy to get Small Business Server 2008 up and running when you've got this book to hand. It helps you in a clear and friendly manner to understand how to implement SBS 2008 inside your business in a way that matches your business needs. The author's experience enables him to share a tried and tested path to deliver the business benefits without becoming bogged down in unnecessary details that are not relevant to small businesses.SBS 2008 is a fantastic investment for Small Businesses to make towards a well managed and highly functional IT solution in their business. This book is the culmination of many years advising small business owners and consultants on the recommend, tried and tested path to implement small business technology from Microsoft. Through this book you will gain an understanding of the features you can choose to use and then how to securely implement the server to deliver them. It will guide you through the installation and configuration process with the help of step-by-step instructions and plentiful screenshots. It will also explain how you can benefit from the collaboration tools based on SharePoint and how you can protect all your business data with a back-up process that covers anything from deleted files to a fire in the office.Imagine how great you'll feel when your Small Business Server 2008 is ready and working, and you can get back to surfing the Internet!
APOLLONIA DIKMANS, RONALD VAN LUTTIKHUIZEN, Lonneke Dikmans
SOA is an industry term which is often preached like a religion rather than taught like a technology, and over time, grasping the concept has become unnecessarily difficult. Many companies proclaim that they don't know where to begin with SOA, while others have begun their SOA effort but haven't reaped the benefits they were convinced it would bring. SOA Made Simpleù unveils the true meaning of Service Oriented Architecture and how to make it successful so that you can confidently explain SOA to anyone!SOA Made Simpleù explains exactly what SOA is in simple terminology and by using real-life examples. Once a simple definition is clear in your mind, you'll be guided through what SOA solves, when and why you should use it, and how to set up, design and categorize your SOA landscape. With this book in hand you'll learn to keep your SOA strategy successful as you expand on it.SOA Made Simpleù demystifies SOA, simply. It is not difficult to grasp, but for various reasons SOA is often made unnecessarily complex. Service-orientation is already a very natural way of thinking for business stakeholders that want to realize and sell services to potential clients, and this book helps you to realize that concept both in theory and practice.You'll begin with a clear and simple explanation of what SOA is and why we need it. You'll then be presented with plain facts about the key ingredients of a service, and along the way learn about service design, layering and categorizing, some major SOA platform offerings as well as governance and successful implementation.After reading SOA Made Simpleù you will have a clear understanding of what SOA is so you can implement and govern SOA in your own organization.
Richard Seroter
SOA is about architecture, not products and SOA enables you to create better business processes faster than ever. While BizTalk Server 2009 is a powerful tool, by itself it cannot deliver long-lasting, agile solutions unless we actively apply tried and tested service-oriented principles.The current BizTalk Server books are all for the 2006 version and none of them specifically looks at how to map service-oriented principles and patterns to the BizTalk product. That's where this book fits in. In this book, we specifically investigate how to design and build service-oriented solutions using BizTalk Server 2009 as the host platform.This book extends your existing BizTalk knowledge to apply service-oriented thinking to classic BizTalk scenarios. We look at how to build the most reusable, flexible, and loosely-coupled solutions possible in the BizTalk environment. Along the way, we dive deeply into BizTalk Server's integration with Windows Communication Foundation, and see how to take advantage of the latest updates to the Microsoft platform. Chock full of dozens of demonstrations, this book walks through design considerations, development options, and strategies for maintaining production solutions.
Mihaela Roxana Ghidersa
Large-scale web applications require you to write code efficiently following business and architectural considerations. They require web developers to understand the impact of their work on the system and how they can evolve the product.With this handbook, every developer will find something to take away. This book will help web developers looking to change projects or work on a new project in understanding the context of the application, along with how some design decisions or patterns fit better in their application’s architecture. It acts as a guide, taking you through different levels of professional growth with a focus on best practices, coding guidelines, business considerations, and soft skills that will help you gain the knowledge to craft a career in web development. Finally, you’ll work with examples and ways of applying the discussed concepts in practical situations.By the end of this book, you’ll have gained valuable insights into what it means to be a web architect, as well as the impact architecture has on a web application.
John Gilbert, Memi Lavi
Organizations undergoing digital transformation rely on IT professionals to design systems to keep up with the rate of change while maintaining stability. With this edition, enriched with more real-world examples, you’ll be perfectly equipped to architect the future for unparalleled innovation.This book guides through the architectural patterns that power enterprise-grade software systems while exploring key architectural elements (such as events-driven microservices, and micro frontends) and learning how to implement anti-fragile systems.First, you'll divide up a system and define boundaries so that your teams can work autonomously and accelerate innovation. You'll cover the low-level event and data patterns that support the entire architecture while getting up and running with the different autonomous service design patterns.This edition is tailored with several new topics on security, observability, and multi-regional deployment. It focuses on best practices for security, reliability, testability, observability, and performance. You'll be exploring the methodologies of continuous experimentation, deployment, and delivery before delving into some final thoughts on how to start making progress.By the end of this book, you'll be able to architect your own event-driven, serverless systems that are ready to adapt and change.
Charalampos S Arapidis, Charalampos S. Arapidis
Sonar is an open source platform used by development teams to manage source code quality. Sonar has been developed with this main objective in mind: make code quality management accessible to everyone with minimal effort. As such, Sonar provides code analyzers, reporting tools, manual reviews, defect-hunting modules, and TimeMachine as core functionalities. It also comes with a plugin mechanism enabling the community to extend the functionality, making Sonar the one-stop-shop for source code quality by addressing not only the developer's requirements, but also the manager's needs.The Sonar Code Quality Testing Essentials book will help you understand the different factors that define code quality and how to improve your own or your team's code using Sonar.You will learn to use Sonar effectively and explore the quality of your source code in the following axes:Coding StandardsDocumentation and CommentsPotential Bugs and DefectsUnit Testing CoverageDesign and ComplexityThrough practical examples, you will customize Sonar components and widgets to identify areas where your source code is lacking. The book goes down to proposing good practices and common solutions that you can put to use to improve such code.You will start with installing and setting up a Sonar server and performing your first project analysis. Then you will go through the process of creating a custom and balanced quality profile exploring all Sonar components through practical examples. After reading the book, you will be able to analyze any project using Sonar and know how to read and evaluate quality metrics.Hunting potential bugs and eliminating complexity are the hottest topics regarding code quality. The book will guide you through the process of finding such problematic areas, leveraging and customizing the most appropriate components. Knowing the best tool for each task is essential. While you improve code and design through the book, you will notice that metrics go high and alerts turn green. You will use the Time Machine and the Timeline to examine how your changes affected the quality.Sonar Code Quality Testing Essentials will enable you to perform custom quality analysis on any Java project and quickly gain insight on even large code bases, as well as provide possible solutions to code defects and complexity matters.
Alistair McDonald, Brian Fitzpatrick
As a busy administrator, you know Spam is a major distraction in todays network. The effects range from inappropriate content arriving in the mailboxes up to contact email addresses placed on a website being deluged with unsolicited mail, causing valid enquiries and sales leads to be lost and wasting employee time. The perception of the problem of spam is as big as the reality. In response to the growing problem of spam, a number of free and commercial applications and services have been developed to help network administrators and email users combat spam. Its up to you to choose and then get the most out of an antispam solution. Free to use, flexible, and effective, SpamAssassin has become the most popular open source antispam application. Its unique combination of power and flexibility make it the right choice. This book will now help you set up and optimize SpamAssassin for your network.
Splunk Essentials. Operational Intelligence at your fingertips - Second Edition
Betsy Page Sigman, Erickson Delgado
Splunk is a search, analysis, and reporting platform for machine data, which has a high adoption on the market. More and more organizations want to adopt Splunk to use their data to make informed decisions.This book is for anyone who wants to manage data with Splunk. You’ll start with very basics of Splunk— installing Splunk—and then move on to searching machine data with Splunk. You will gather data from different sources, isolate them by indexes, classify them into source types, and tag them with the essential fields. After this, you will learn to create various reports, XML forms, and alerts. You will then continue using the Pivot Model to transform the data models into visualization. You will also explore visualization with D3 in Splunk. Finally you’ll be provided with some real-world best practices in using Splunk.
Massimiliano Dess?É?íÂ!¨, Brian Fitzpatrick, Massimiliano Dessi
Developing powerful web applications with clean, manageable code makes the maintenance process much easier. Aspect-Oriented Programming (AOP) is the easiest and quickest way to achieve such results. Spring is the only Java framework to offer AOP features. The combined power of Spring and AOP gives a powerful and flexible platform to develop and maintain feature-rich web applications quickly.This book will help you to write clean, manageable code for your Java applications quickly, utilizing the combined power of Spring and AOP. You will master the concepts of AOP by developing several real-life AOP-based applications with the Spring Framework, implementing the basic components of Spring AOP: Advice, Joinpoint, Pointcut, and Advisor.This book will teach you everything you need to know to use AOP with Spring. It starts by explaining the AOP features of Spring and then moves ahead with configuring Spring AOP and using its core classes, with lot of examples. It moves on to explain the AspectJ support in Spring. Then you will develop a three-layered example web application designed with Domain-Driven Design (DDD) and built with Test-Driven Development methodology using the full potential of AOP for security, concurrency, caching, and transactions.
Petri Kainulainen
Spring Framework has always had a good support for different data access technologies. However, developers had to use technology-specific APIs, which often led to a situation where a lot of boilerplate code had to be written in order to implement even the simplest operations. Spring Data changed all this. Spring Data makes it easier to implement Spring-powered applications that use cloud-based storage services, NoSQL databases, map-reduce frameworks or relational databases.Spring Data is a practical guide that is full of step-by-step instructions and examples which ensure that you can start using the Java Persistence API and Redis in your applications without extra hassle.This book provides a brief introduction to the underlying data storage technologies, gives step-by-step instructions that will help you utilize the discussed technologies in your applications, and provides a solid foundation for expanding your knowledge beyond the concepts described in this book.You will learn an easier way to manage your entities and to create database queries with Spring Data JPA. This book also demonstrates how you can add custom functions to your repositories. You will also learn how to use the Redis key-value store as data storage and to use its other features for enhancing your applications.Spring Data includes all the practical instructions and examples that provide you with all the information you need to create JPA repositories with Spring Data JPA and to utilize the performance of Redis in your applications by using Spring Data Redis.
Ashish Sarin, Ashish Kumar Sarin, Brian Fitzpatrick
Spring Roo is an easy-to-use productivity tool for rapidly developing Java enterprise applications using well-recognized frameworks such as Spring, Hibernate, AspectJ, Spring Web Flow, Spring Security, GWT, and so on. Spring Roo takes care of creating maven-enabled projects, enterprise application architecture based on your choice of technologies, unit/integration tests based on your choice of testing framework, and so on. The bottom line is that if you're using Spring, then you must consider using Spring Roo for increased productivity.Spring Roo 1.1 Cookbook brings together a collection of recipes that demonstrate how the Spring Roo developer tool simplifies rapidly developing enterprise applications using standard technologies/frameworks such as JPA, GWT, Spring, Flex, Spring Web Flow, Spring Security, and so on. It introduces readers to developing enterprise applications for the real world using Spring Roo tool. The book starts off with basic recipes to make readers comfortable with using Spring Roo tool. As the book progresses, readers are introduced to more sophisticated features supported by Spring Roo in the context of a Flight Booking application. In a step-by-step by fashion, each recipe shows how a particular activity is performed, what Spring Roo does when a command is executed, and why it is important in the context of the application being developed.Initially, you make a quick start with using Spring Roo through some simple recipes. Then you learn how Spring Roo simplifies creating the persistence layer of an enterprise application using JPA. You are introduced to the various roo commands to create JPA entities, create relationships between JPA entities, create integration tests using Spring TestContext framework, and so on. Following this, the book shows you how Spring Roo simplifies creating the web layer of an enterprise application using Spring Web MVC, Spring Web Flow, and how to create selenium tests for controller objects.Subsequently, we focus on using Spring-BlazeDS, GWT, JSON, and so on. Spring Roo commands that are used to incorporate e-mail/messaging features into an enterprise application are demonstrated next. Finally, we wrap it up with some miscellaneous recipes that show how to extend Spring Roo via add-ons, incorporate security, create cloud-ready applications, remove Spring Roo from your enterprise application, and so on.
Kulbir Saini, Alex Rousskov
Squid Proxy Server enables you to cache your web content and return it quickly on subsequent requests. System administrators often struggle with delays and too much bandwidth being used, but Squid solves these problems by handling requests locally. By deploying Squid in accelerator mode, requests are handled faster than on normal web servers making your site perform quicker than everyone else's!Squid Proxy Server 3.1 Beginner's Guide will help you to install and configure Squid so that it is optimized to enhance the performance of your network. The Squid Proxy Server reduces the amount of effort that you will have to put in, saving your time to get the most out of your network. Whether you only run one site, or are in charge of a whole network, Squid is an invaluable tool that improves performance immeasurably. Caching and performance optimization usually requires a lot of work on the developer's part, but Squid does all that for you. This book will show you how to get the most out of Squid by customizing it for your network. You will learn about the different configuration options available and the transparent and accelerated modes that enable you to focus on particular areas of your network.Applying proxy servers to large networks can be a lot of work as you have to decide where to place restrictions and who should have access, but the straightforward examples in this book will guide you through step by step so that you will have a proxy server that covers all areas of your network by the time you finish the book.
Joseph Steinberg, Tim Speed, Timothy Speed
Virtual Private Networks (VPNs) provide remote workers with secure access to their company network via the internet by encrypting all data sent between the company network and the user?s machine (the client). Before SSL VPN this typically required the client machine to have special software installed, or at least be specially configured for the purpose.Clientless SSL VPNs avoid the need for client machines to be specially configured. Any computer with a Web browser can access SSL VPN systems. This has several benefits:Low admin costs, no remote configurationUsers can safely access the company network from any machine, be that a public workstation, a palmtop or mobile phoneBy pass ISP restrictions on custom VPNs by using standard technologies SSL VPN is usually provided by a hardware appliance that forms part of the company network. These appliances act as gateways, providing internal services such as file shares, email servers, and applications in a web based format encrypted using SSL. Existing players and new entrants, such as Nokia, Netilla, Symantec, Whale Communications, and NetScreen technologies, are rushing our SSL VPN products to meet growing demand.This book provides a detailed technical and business introduction to SSL VPN. It explains how SSL VPN devices work along with their benefits and pitfalls. As well as covering SSL VPN technologies, the book also looks at how to authenticate and educate users ? a vital element in ensuring that the security of remote locations is not compromised. The book also looks at strategies for making legacy applications accessible via the SSL VPN.
Garima Bajpai, Thomas Schuetz
Many organizations are embracing cloud technology to remain competitive, but implementing and adopting development processes while modernizing a cloud-based ecosystem can be challenging.Strategizing Continuous Delivery in Cloud helps you modernize continuous delivery and achieve infrastructure-application convergence in the cloud. You’ll learn the differences between cloud-based and traditional delivery approaches and develop a tailored strategy. You’ll discover how to secure your cloud delivery environment, ensure software security, run different test types, and test in the pre-production and production stages.You’ll also get to grips with the prerequisites for onboarding cloud-based continuous delivery for organizational and technical aspects. Then, you’ll explore key aspects of readiness to overcome core challenges in your cloud journey, including GitOps, progressive delivery controllers, feature flagging, differences between cloud-based and traditional tools, and implementing cloud chaos engineering.By the end of this book, you’ll be well-equipped to select the right cloud environment and technologies for CD and be able to explore techniques for implementing CD in the cloud.