The emergence of the cloud and modern, fast corporate networks demands that you perform judicious balancing of computational loads.Practical Load Balancing presents an entire analytical framework to increase performance not just ofone machine, but of your entire infrastructure. Practical Load Balancing starts by introducingkey concepts and the tools you'll need to tackle your load-balancing issues. You'll travel through the IP layers and learnhow they can create increased network traffic for you. You'll seehow to account for persistence and state, and how you can judge the performance of scheduling algorithms. You'll then learn how to avoid performance degradation and any risk of the sudden disappearance of a service on a server.If you're concerned with running your load balancer for an entire network, you'll find out how to set upyour network topography, and condense each topographical variety into recipes that will serve you in different situations. You'll also learn about individual servers, and load balancers that can perform cookie insertion or improve your SSL throughput. You'll also explore load balancing in the modern context of the cloud. While load balancers need to be configured for high availability once the conditions on the network have been created, modern load balancing has found its way into the cloud, where good balancing is vital for the very functioning of the cloud, and where IPv6 is becoming ever more important. You can read Practical Load Balancing from end to end or out of sequence, and indeed, if there are individual topics that interest you, you can pick up this book and work through it once you have read the first three chapters. What you'll learn Judgenetwork load balancingalgorithms and when to use them Plan your network for optimal load balancing performance Configure single servers to take advantage of modern load balancing software Learning to use load balancing software like HAproxy, STunnel etc. Become familiar with implications of IPv6 and the cloud Improve SSL throughput and seamless application cookie insertion Who this book is for

Network engineers, developers and IT managers. Table of Contents Part I: Getting Started 1. Introduction 2. How websites work: what makes them slow 3. Content Caching: keeping the load light 4. DNS based load balancing 5. Content Delivery Networks 6. Planning for Performance and Reliability Part II: Load Balancing Essentials 7. Essential concepts you need to know 8. HTTP load balancing 9. Database load balancing 10. Load balancing your network connection 11. SSL Load Balancing Part III: Load balancing situations 12. Clustering the Load Balancers for High Availability 13. Load balancing in the cloud 14. IPv6: Implications and concepts 15. Where to go next... Appendix 1: Common Terms and Concepts

Nach einer kompakten Darstellung der Grundlagen der Pressearbeit arbeiten die Autoren die besonderen Aspekte der IT-Pressearbeit heraus. Schwerpunkte des Buches sind der Aufbau der Pressearbeit, die Darstellung m glicher Aktivit ten und der Instrumente und Strategien, die zur Realisierung zur Verf gung stehen. Ebenso kommt der Einsatz von Presseagenturen und Aufbau und Pflege von Presseportalen zur Sprache. Zahlreiche Beispiele erfolgreicher Presseaktivit ten runden dieses Werk ab.

Der Leser erh lt mit diesem Buch einen konkreten Leitfaden zum Aufbau der Pressearbeit und ein grundlegendes Verst ndnis f r die besonderen Bedingungen, Wege und Aktivit ten der Pressearbeit im IT-Umfeld.

Dieses Buch bietet Projektleitern und Informatikern in Forschung und Praxis eine aus Datenbanksicht fundierte EinfA1/4hrung in die Welt von XML und die darauf aufbauenden Standards wie XML Schema, XML Query und XSL/T. Die zentralen Konzepte werden dabei in Beziehung zu konventionellen relationalen und objektorientierten Techniken dargestellt. Die Verwendung konzeptueller Modelle im Zusammenhang mit XML sowie die Aoebertragung auf andere Datenmodelle werden erlAutert. FA1/4r die EinschAtzung der praktischen EinsatzfAhigkeit bietet das Buch eine vertiefte Analyse zahlreicher kommerzieller Produkte wie Oracle 9i, MS SQL Server 2000 oder Tamino. An zwei Anwendungsbeispielen wird der reale Einsatz der vorgestellten Techniken prAsentiert, ein Ausblick auf zukA1/4nftige Entwicklungen unter BerA1/4cksichtigung aktueller Forschungsvorhaben rundet das Buch ab.

Performance is a hugely important area of web development. If your site runs slowly, users are going to leave, and the problem only grows as your site gets more popular. Pro JavaScript Performance gives you the tools you need to keep your sites smooth and responsive no matter how many users you have. Best practices are changing or becoming redefined continually because of changes and optimizations at the interpreter level, and differences in system configuration, and network speeds. This is exacerbated by the quickened release schedule that most browsers have adopted. Just as important as following best practices is the ability to measure your own performance, so that you can adjust as times change, and so that you can note the subtle nuances in your own code and define your own best practices by your own observations. This book gives you the tools to observe and track the performance of your web applications over time from multiple perspectives, so that you are always aware of, and can fix, all aspects of your performance.What you'll learn * Describes the different aspects of performance, and explores the tools for quantifying and improving performance * Provides tactical solutions for creating tools to measure the performance of your own web applications * Learn to apply performance best practices, and how to quantify your results Who this book is for Pro JavaScript Performance is written for advanced JavaScript users and web developers. You will need a strong understanding of JavaScript to get the most from this book. Table of Contents * What Is Performance? * Tools and Technology to Measure and Impact Performance * WPTRunner--Automated Performance Monitoring and Visualization with WebPagetest * perfLogger--JavaScript Benchmarking and Logging * Looking Forward, A Standard for Performance * Web Performance Optimizations * Runtime Performance * Balancing Performance with Software Engineering Best Practices and Running in Production

The professional programmer's Deitel (R) guide to Python (R) with introductory artificial intelligence case studies Written for programmers with a background in another high-level language, Python for Programmers uses hands-on instruction to teach today's most compelling, leading-edge computing technologies and programming in Python--one of the world's most popular and fastest-growing languages. Please read the Table of Contents diagram inside the front cover and the Preface for more details. In the context of 500+, real-world examples ranging from individual snippets to 40 large scripts and full implementation case studies, you'll use the interactive IPython interpreter with code in Jupyter Notebooks to quickly master the latest Python coding idioms. After covering Python Chapters 1-5 and a few key parts of Chapters 6-7, you'll be able to handle significant portions of the hands-on introductory AI case studies in Chapters 11-16, which are loaded with cool, powerful, contemporary examples. These include natural language processing, data mining Twitter (R) for sentiment analysis, cognitive computing with IBM (R) Watson (TM), supervised machine learning with classification and regression, unsupervised machine learning with clustering, computer vision through deep learning and convolutional neural networks, deep learning with recurrent neural networks, big data with Hadoop (R), Spark (TM) and NoSQL databases, the Internet of Things and more. You'll also work directly or indirectly with cloud-based services, including Twitter, Google Translate (TM), IBM Watson, Microsoft (R) Azure (R), OpenMapQuest, PubNub and more. Features 500+ hands-on, real-world, live-code examples from snippets to case studies IPython + code in Jupyter (R) Notebooks Library-focused: Uses Python Standard Library and data science libraries to accomplish significant tasks with minimal code Rich Python coverage: Control statements, functions, strings, files, JSON serialization, CSV, exceptions Procedural, functional-style and object-oriented programming Collections: Lists, tuples, dictionaries, sets, NumPy arrays, pandas Series & DataFrames Static, dynamic and interactive visualizations Data experiences with real-world datasets and data sources Intro to Data Science sections: AI, basic stats, simulation, animation, random variables, data wrangling, regression AI, big data and cloud data science case studies: NLP, data mining Twitter (R), IBM (R) Watson (TM), machine learning, deep learning, computer vision, Hadoop (R), Spark (TM), NoSQL, IoT Open-source libraries: NumPy, pandas, Matplotlib, Seaborn, Folium, SciPy, NLTK, TextBlob, spaCy, Textatistic, Tweepy, scikit-learn (R), Keras and more Register your product to gain access to updated chapters and material, as well as downloads, future updates, and/or corrections as they become available. See inside book for more information.

Give users the real-time experience they expect, by using Elixir and Phoenix Channels to build applications that instantly react to changes and reflect the application's true state. Learn how Elixir and Phoenix make it easy and enjoyable to create real-time applications that scale to a large number of users. Apply system design and development best practices to create applications that are easy to maintain. Gain confidence by learning how to break your applications before your users do. Deploy applications with minimized resource use and maximized performance. Real-time applications come with real challenges - persistent connections, multi-server deployment, and strict performance requirements are just a few. Don't try to solve these challenges by yourself - use a framework that handles them for you. Elixir and Phoenix Channels provide a solid foundation on which to build stable and scalable real-time applications. Build applications that thrive for years to come with the best-practices found in this book. Understand the magic of real-time communication by inspecting the WebSocket protocol in action. Avoid performance pitfalls early in the development lifecycle with a catalog of common problems and their solutions. Leverage GenStage to build a data pipeline that improves scalability. Break your application before your users do and confidently deploy them. Build a real-world project using solid application design and testing practices that help make future changes a breeze. Create distributed apps that can scale to many users with tools like Phoenix Tracker. Deploy and monitor your application with confidence and reduce outages. Deliver an exceptional real-time experience to your users, with easy maintenance, reduced operational costs, and maximized performance, using Elixir and Phoenix Channels. What You Need: You'll need Elixir 1.9+ and Erlang/OTP 22+ installed on a Mac OS X, Linux, or Windows machine.

Pro HTML5 Performance provides a practical guide to building extremely fast, light-weight and scalable websites using fully standards compliant techniques and best practices. It strikes a balance between imparting best-practice information for when you're building ground up and instantly applicable techniques to help you solve issues with your existing projects. In addition to a wealth of tips, tricks and secrets you'll find advice and code samples that elegantly layout the problems your facing and the best ways of solving them. By reading Pro HTML5 Performance you'll squeeze every last ounch of performance from your code, giving your applications unrivalled speed and cost-efficiency.What you'll learn * Optimize your HTML5, CSS, and JavaScript for client-side performance * Reduce your code's bandwidth to achieve both speed and cost savings * Learn to target multiple devices from the same page * See how your HTML5 content can gracefully degrade to older browsers * Create advanced applications, such as animations, with a light footprint * Make HTML5's semantic markup work for you Who this book is for This book is ideal for front-end programmers who know the basics but who want to master the techniques for creating high-performance web sites. It is equally applicable to people who want to architect big sites 'right first time' or those that want to apply some of the concepts to their existing site to make it run a bit faster or same them a little money. Whether you go 'all out' and use everything or just apply some concepts to your existing sites is up to you.

Make your websites more dynamic by adding a feedback form, creating a private area where members can upload images that are automatically resized, or storing all your content in a database. David Powers has updated his definitive book to incorporate the latest techniques and changes to PHP with the arrival of PHP 8. New features include named attributes, constructor property promotion, the stricter and more concise match expression, union types, and more. The problem is, you're not a programmer and the thought of writing code sends a chill up your spine. Or maybe you've dabbled a bit in PHP and MySQL, but you can't get past baby steps. If this describes you, then you've just found the right book. PHP powers four out of every five websites that use a server-side language. In combination with the MySQL database it's ideal for creating dynamic websites. PHP and MySQL are free, easy to use, and provided by many web hosting companies in their standard packages. This book also covers MariaDB, a seamless replacement for MySQL that has been adopted on many web servers. Unfortunately, most PHP books either expect you to be an expert already or force you to go through endless exercises of little practical value. In contrast, this book gives you real value right away through a series of practical examples that you can incorporate directly into your sites, optimizing performance and adding functionality such as file uploading, email feedback forms, image galleries, content management systems, and much more. Each solution is created with not only functionality in mind, but also visual design. But this book doesn't just provide a collection of ready-made scripts: each PHP solution builds on what's gone before, teaching you the basics of PHP and database design quickly and painlessly. You'll learn how to optimize your code using object-oriented programming (OOP) techniques. By the end of the book, you'll have the confidence to start writing your own scripts or-if you prefer to leave that task to others-to adapt existing scripts to your own requirements. Right from the start, you're shown how easy it is to protect your sites by adopting secure coding practices. What You Will Learn Design and build dynamic PHP-based web sites and applications Get started right away through practical examples that you can reuse Incorporate PHP 8 elements including named attributes, constructor property promotion, and union types Understand the subtle, but important differences between switch and match Work with the latest PHP 8 techniques, innovations, and best practices Who This Book Is For Readers should ideally have some prior exposure to web development using PHP.

Thanks to the authors' easy-to-digest style, you'll effortlessly learn about types, object-oriented programming with classes and interfaces, and using TypeScript with JavaScript libraries. You'll discover TypeScript's excellent tooling as you explore code-quality improvement with TSLint, debugging with source maps, unit testing, and more. TypeScript is JavaScript with an important upgrade! By adding a strong type system to JavaScript, TypeScript can help you eliminate entire categories of runtime errors. In TypeScript Quickly, you'll learn to build rock-solid apps through practical examples and hands-on projects under the expert instruction of experienced web developers Yakov Fain and Anton Moiseev. WILL SELL LIKE Angular Development with Typescript, Key features * Mastering TypeScript syntax * Object-oriented programming with classes and interfaces * Using TypeScript with JavaScript libraries * Multiple real-world code samples Audience Written for intermediate web developers comfortable with JavaScript ES5 and HTML. About the technology TypeScript is an extension of JavaScript that includes key language features such as optional static typing, compile-time error catching, and auto-complete. By specifying types and type annotations, your code becomes much easier to interpret, which improves productivity and team development. In particular, TypeScript makes complex applications like SPAs much easier to maintain and extend. Yakov Fain and Anton Moiseev are experienced web application developers. They authored two editions of Manning's Angular Development with TypeScript among other technical books. Yakov is a Java champion and a prolific tech blogger at yakov.fain.com. Yakov Fain and Anton Moiseev are experienced web application developers. They authored two editions of Manning's Angular Development with TypeScript among other technical books. Yakov is a Java champion and a prolific tech blogger at yakov.fain.com.

Der Mangel an qualifizierten Softwareentwicklern im deutschsprachigen Raum verscharft sich. Die effektive Zusammenarbeit in weltweit verteilten Teams ist daher ein entscheidender Wettbewerbsfaktor und Offshoring wird immer relevanter. Der Autor moechte das Thema auch kleinen und mittleren Unternehmen naher bringen und die Eintrittsbarrieren fur kostengunstige Offshore-Softwareentwicklungen reduzieren. Er zeigt, wie Unternehmen erfolgreich Offshore-Projekte umsetzen koennen: praxisnah, mit konkreten Fallstudien und Hinweisen zur Projektabwicklung. Dem Leser werden Werkzeuge vermittelt, mit denen er die Risiken in der Abwicklung von Offshore-Projekten reduzieren kann, ohne dass Kostenvorteile verloren gehen.

Gesch ftsprozesse in Unternehmen sind h ufig ereignisgesteuert. Denn im Gesch ftsumfeld treten Ereignisse auf, auf die angemessen und m glichst in Echtzeit reagiert werden muss, etwa in Sensornetzwerken oder im automatischen Wertpapierhandel. Event-Driven Architecture (EDA) ist ein neues Paradigma der Softwarearchitektur, das auf der Verarbeitung von Ereignissen beruht. Das Buch diskutiert die Grundprinzipien von EDA, f hrt in die wichtigsten Konzepte der Ereignisverarbeitung ein und veranschaulicht deren Umsetzung anhand einer Fallstudie.

Learn to integrate programming with good documentation. This book teaches you the craft of documentation for each step in the software development lifecycle, from understanding your users' needs to publishing, measuring, and maintaining useful developer documentation. Well-documented projects save time for both developers on the project and users of the software. Projects without adequate documentation suffer from poor developer productivity, project scalability, user adoption, and accessibility. In short: bad documentation kills projects. Docs for Developers demystifies the process of creating great developer documentation, following a team of software developers as they work to launch a new product. At each step along the way, you learn through examples, templates, and principles how to create, measure, and maintain documentation-tools you can adapt to the needs of your own organization. What You'll Learn Create friction logs and perform user research to understand your users' frustrations Research, draft, and write different kinds of documentation, including READMEs, API documentation, tutorials, conceptual content, and release notes Publish and maintain documentation alongside regular code releases Measure the success of the content you create through analytics and user feedback Organize larger sets of documentation to help users find the right information at the right time Who This Book Is For Ideal for software developers who need to create documentation alongside code, or for technical writers, developer advocates, product managers, and other technical roles that create and contribute to documentation for their products and services.

All true craftsmen need the best tools to do their finest work, and programmers are no different. Java Power Tools delivers 30 open source tools designed to improve the development practices of Java developers in any size team or organization. Each chapter includes a series of short articles about one particular tool -- whether it's for build systems, version control, or other aspects of the development process -- giving you the equivalent of 30 short reference books in one package. No matter which development method your team chooses, whether it's Agile, RUP, XP, SCRUM, or one of many others available, Java Power Tools provides practical techniques and tools to help you optimize the process. The book discusses key Java development problem areas and best practices, and focuses on open source tools that can help increase productivity in each area of the development cycle, including: *Build tools including Ant and Maven 2 *Version control tools such as CVS and Subversion, the two most prominent open source tools *Quality metrics tools that measure different aspects of code quality, including CheckStyle, PMD, FindBugs and Jupiter *Technical documentation tools that can help you generate good technical documentation without spending too much effort writing and maintaining it *Unit Testing tools including JUnit 4, TestNG, and the open source coverage tool Cobertura *Integration, Load and Performance Testing to integrate performance tests into unit tests, load-test your application, and automatically test web services, Swing interfaces and web interfaces *Issue management tools including Bugzilla and Trac *Continuous Integration tools such as Continuum, Cruise Control, LuntBuild and Hudson If you are a Java developer, these tools can help improve your development practices, and make your life easier in the process. Lead developers, software architects and people interested in the wider picture will be able to gather from these pages some useful ideas about improving your project infrastructure and best practices.

Das Buch soll Mainframe-Anwendern helfen, die Philosophie von Datenbanken zu verstehen und selbst Datenbankrecherchen zu formulieren. Hierfur stellt IBMs Query Management Facility, kurz QMF, eine sehr geschickt komponierte Sammlung von Werkzeugen zur Verfugung. Das Buch richtet sich an Endanwender und zeigt, wie man mit Hilfe von QMF fachliche Probleme loesen kann, auch ohne die Entwicklungsabteilung zu bemuhen. Die beigefugte CD-ROM enthalt die Tabellen, die allen Beispielen zugrunde liegen, als ASCII-Dateien und ermoeglicht die praktische Durchfuhrung der Fallbeispiele mit dem Computer.

If you're ready to write better Python code and use more advanced features, Advanced Python Programming was written for you. Brian Overland and John Bennett distill advanced topics down to their essentials, illustrating them with simple examples and practical exercises. Building on Overland's widely-praised approach in Python Without Fear, the authors start with short, simple examples designed for easy entry, and quickly ramp you up to creating useful utilities and games, and using Python to solve interesting puzzles. Everything you'll need to know is patiently explained and clearly illustrated, and the authors illuminate the design decisions and tricks behind each language feature they cover. You'll gain the in-depth understanding to successfully apply all these advanced features and techniques: Coding for runtime efficiency Lambda functions (and when to use them) Managing versioning Localization and Unicode Regular expressions Binary operators Radix conversions Data formatting, in depth Creating, building, and importing packages Using the Django web-development package Graphics programming Magic methods and advanced object orientation Reading and writing binary files, and more

As Ruby pro David Copeland explains, writing a command-line application that is self-documenting, robust, adaptable and forever useful is easier than you might think. Ruby is particularly suited to this task, since it combines high-level abstractions with "close to the metal" system interaction wrapped up in a concise, readable syntax. Moreover, Ruby has the support of a rich ecosystem of open-source tools and libraries. Ten insightful chapters each explain and demonstrate a command-line best practice. You'll see how to use these tools to elevate the lowliest automation script to a maintainable, polished application. You'll learn how to use free, open source parsers to create user-friendly command-line interfaces as well as command suites. You'll see how to use defaults to keep options simple for everyday users, while giving advanced users options for more complex tasks. There's no reason a command-line application should lack documentation, whether it's part of a help command or a man page; you'll find out when and how to use both. Your journey from command-line novice to pro ends with a look at valuable approaches to testing your apps, and includes some fun techniques for outside-the-box, colorful interfaces that will delight your users. With Ruby, the command line is not dead. Long live the command line. What You Need: All you'll need is Ruby, and the ability to install a few gems along the way. Examples written for Ruby 1.9.2, but 1.8.7 should work just as well.

Add custom features to browsers old and new by writing polyfill libraries, JavaScript plugins that take browsers beyond their native capabilities. In this practical fieldbook, author Brandon Satrom introduces principles and guidelines for polyfill development, and then walks you through the steps for building a complex, real-world HTML5 polyfill.

You'll also explore the future of polyfilling--or prollyfilling--that will enable you to test and work with emerging concepts, often ahead of browser vendors. By the time you finish this book, you'll have the tools and hands-on experience you need to build reliable polyfills for today's and tomorrow's Web.Learn the current state of polyfills, including shims, opt-ins, and drop-insUse principles and practices to build responsible polyfills that benefit the entire web development communityBuild out several features for an HTML5 Forms polyfill libraryConfigure a build environment and run automated cross-browser testingOptimize performance, handle edge cases, and fine-tune the speed of your polyfillGet examples of prollyfilling libraries that push the boundaries of the WebWrite a sample prollyfill and compare it to current polyfill builds

This friendly, fast-paced guide is perfect for anyone puzzled by the cloud! Learn the fundamentals of Amazon Web Services, and be ready to ace your AWS Certified Cloud Practitioner Exam. In AWS for Non-engineers you will learn: How cloud computing and AWS are different from "legacy" systems Prepare for the AWS Certified Cloud Practitioner Exam When cloud computing is the right option for your organization Core AWS services including storage services, database services, and security services How billing and pricing work on AWS, and how to pick for your budget Security and compliance concepts for building in AWS AWS for Non-engineers is written for anyone just starting with Amazon Web Services or cloud computing in general. It's written by Hiroko Nishimura, and is based on her acclaimed video course that has been taken by over 250,000 learners. In this reader-friendly book, you'll learn how to talk about cloud concepts with engineers, what the cloud could do for your business, and how to start using AWS's amazing services for your own IT tasks. When you're finished, you'll be comfortable with the basics of cloud computing on AWS and you'll be prepared to take the AWS Certified Cloud Practitioner Exam! about the technology Modern IT systems run in the cloud. Whether you're in customer service, marketing, or a technical role, cloud technologies like Amazon Web Services (AWS) have become as important to your job as spreadsheets, CRMs, and databases. Knowing AWS fundamentals will help you speak the language of developers and software engineers, and eventually create your own products, services, and projects.

Systemen zum Enterprise Resource Planning, kurz ERP-Systemen, geht der Ruf voraus, enorme Kosten zu verursachen. Hingegen bleibt der Nutzen von ERP-Systemen fur Unternehmen oftmals unklar. Das Buch geht der Frage nach, wie Unternehmen den Einsatz von ERP-Systemen durch das Generieren signifikanter Kosten- oder Nutzenvorteile optimieren konnen. Konkrete Erfahrungsberichte aus der Praxis beleuchten verschiedenartige Aspekte der Kosten-/Nutzenoptimierung von ERP-Systemen: Vom Architekturmanagement (z.B. ERP-Konsolidierung) uber die Implementation (z.B. Adaptive Computing) bis hin zum Betrieb von ERP-Systemen. Das Buch wendet sich an Praktiker und IT-Leiter, die ihr ERP-System optimieren wollen. Es wendet sich zugleich an Unternehmensleitungen, die mit ihren IT-Verantwortlichen nach Wegen der Kosten-/Nutzenoptimierung suchen. Ein Buch von Praktikern fur Praktiker!

Create physical interfaces that interact with the Internet and web pages. With Arduino and JavaScript you can create interactive physical displays and connected devices that send data to or receive data from the web. You'll take advantage of the processes needed to set up electronic components, collect data, and create web pages able to interact with electronic components. Through exercises, projects, and explanations, this book will give you the core front end web development and electronics skills needed to create connected physical interfaces and build compelling visualizations with a range of JavaScript libraries. By the end of the book you will have developed fully working interactive prototypes capable of sending data to and receiving data from a physical interface. Most importantly, Connecting Arduino to the Web will give you a taste of what is possible and the knowledge to create your own connected physical interfaces and bring the web into your electronics projects. What You'll Learn Build an Internet of Things dashboard that updates with electronics attached to an Arduino Use components to interact with online 3D displays Create web pages with HTML and CSS Set up a Node.js server Use WebSockets to process live data Interact with scalable vector graphics (SVG) Who This Book Is For Technologists, developers, and enthusiasts looking to extend their skills, be able to develop physical prototypes with connected devices, and with an interest in getting started with IoT. Also, those excited by the possibilities of connecting the physical and the web.

Implement web applications in Java using the open-source Vaadin framework version 20 and later. This easy-to-follow book covers all the key concepts and steps to become competent with modern versions of Vaadin. The book covers everything from setting up the development environment to implementing advanced features such as Server Push and database connectivity. The book helps you become proficient in the Vaadin framework, prepare for Vaadin certifications, and shows you how to apply the power of the Java programming language in developing applications for the web. Author Alejandro Duarte starts with an introduction to web development and its key technologies. He then describes and demonstrates how Vaadin simplifies web development by allowing you to implement web graphical user interfaces using the Java programming language without having to code in JavaScript or HTML. Once a solid foundation on the key web and Vaadin concepts is established, Duarte digs deeper into explaining layouts and user interface components such as combo boxes, dialogs, upload fields, and data grids. He also covers topics such as styling with CSS, data binding, client-side views implementation with TypeScript, and integration with Spring Boot and Jakarta EE. What You Will Learn Build web applications in Java using Servlet technology and Vaadin Combine layouts and user interface components to create views in Java Connect values in UI components to Java objects in the server through data binding Customize display styles and add responsive capabilities using CSS Display tabular data using the Grid component Implement client-side views using TypeScript Integrate Vaadin applications with Spring Boot and Jakarta EE Connect Vaadin applications to SQL databases Who This Book Is For Developers with a basic or higher knowledge of Java programming who want to build on their Java skills to create web graphical user interfaces, Java developers who want to create web applications without having to code in JavaScript, and developers who are preparing to take and pass Vaadin certification exams

Implement the powerful multimedia and interactive capabilities offered by HTML5, including style control tools, illustration tools, video, audio, and rich media solutions. Understand how HTML5 is changing the web development game with this project-based book that shows you-not just tells you-what HTML5 can do for your websites. Reinforce your practical understanding of the new standard with demo applications and tutorials, so that execution is one short step away. HTML5 is the future of the web. Literally every web designer and developer needs to know how to use this language to create the types of web sites consumers now expect. This new edition of the bestseller teaches you to enhance your web designs with rich media solutions and interactivity, using detailed descriptions and hands-on projects for every step along the way. The second edition contains completely updated information, including more on mobility and video standards, plus new projects. The companion website, visualizetheweb.com, is packed full of extra information, online code libraries, and a user forum, offering even more opportunity to learn new skills, practice your coding and interact with other users. * NEW content added, detailing Web API, Mobile/Tablet Controls, CSS3 for Mobile Devices, Creating SVG Illustrations, and Emerging Standards * Updated information on how to use HTML5 within a variety of browsers including Chrome, Safari, Internet Explorer, and Firefox * As in the first edition, concepts are thoroughly explained and then brought to life via hands-on projects in each section

Ruby is the fastest growing and most exciting dynamic language out there. If you need to get working programs delivered fast, you should add Ruby to your toolbox. This book is the only complete reference for both Ruby 1.9 and Ruby 2.0, the very latest version of Ruby. 2013 marks the 20th anniversary of the Ruby language. We're proud that throughout its history, we've continued to cover the latest version of Ruby. Would you like to go from first idea to working code much, much faster? Do you currently spend more time satisfying the compiler instead of your clients or end users? Are you frustrated with demanding languages that seem to get in your way, instead of getting the work done? Are you using Rails, and want to dig deeper into the underlying Ruby language? If so, then we've got a language and book for you! Ruby is a fully object-oriented language, much like the classic object-oriented language, Smalltalk. Like Smalltalk, it is dynamically typed (as opposed to Java or C++), but unlike Smalltalk, Ruby features the same conveniences found in modern scripting languages such as Perl and Python. The combination of the power of a pure object-oriented language with the convenience of a scripting language makes Ruby a favorite tool of intelligent, forward-thinking programmers. The Pickaxe contains four major sections: * An acclaimed tutorial on using Ruby. * The definitive reference to the language. * Complete documentation of all built-in classes, modules, and methods. * Complete descriptions of all 97 standard libraries. This is the reference manual for Ruby, including a description of all the standard library modules, a complete reference to all built-in classes and modules (including all the new and changed methods introduced by Ruby 1.9, 1.9.2, 1.9.3, and 2.0). It also includes all the new and changed syntax and semantics introduced since Ruby 1.8. Learn about the new parameter passing rules, local variable scoping in blocks, fibers, and the new block declaration syntax, among other exciting new features. About Ruby 2.0 Ruby 2.0 is a minor update to Ruby 1.9, unlike the more major updates from Ruby 1.8 to Ruby 1.9. The major language changes in Ruby 2.0 are the addition of keyword arguments and the change to use UTF-8 as the default source file encoding. There are a number of additions to the standard library, including: * @Enumerator::Lazy@, which adds support for lazy access to potentially infinite lists. * Refinements allow you to encapsulate changes to third-party classes, and scope their application to individual source files, preventing your changes from polluting the global application. You'll also find that Ruby 2 is faster, and has memory management improvements that make it more server-friendly. All told, there are over 110 sections of the book that have been flagged and cross-linked to indicate 2.0 content. What You Need * This book assumes you have a basic understanding of object-oriented programming. * In general, Ruby programmers tend to favor the the command line for running their code, and they tend to use text editors rather than IDEs.

Discover the Django web application framework and get started building Python-based web applications. This book takes you from the basics of Django all the way through to cutting-edge topics such as creating RESTful applications. Beginning Django also covers ancillary, but essential, development topics, including configuration settings, static resource management, logging, debugging, and email. Along with material on data access with SQL queries, you'll have all you need to get up and running with Django 1.11 LTS, which is compatible with Python 2 and Python 3. Once you've built your web application, you'll need to be the admin, so the next part of the book covers how to enforce permission management with users and groups. This technique allows you to restrict access to URLs and content, giving you total control of your data. In addition, you'll work with and customize the Django admin site, which provides access to a Django project's data. After reading and using this book, you'll be able to build a Django application top to bottom and be ready to move on to more advanced or complex Django application development. What You'll Learn Get started with the Django framework Use Django views, class-based views, URLs, middleware, forms, templates, and Jinja templates Take advantage of Django models, including model relationships, migrations, queries, and forms Leverage the Django admin site to get access to the database used by a Django project Deploy Django REST services to serve as the data backbone for mobile, IoT, and SaaS systems Who This Book Is For Python developers new to the Django web application development framework and web developers new to Python and Django.

Several client-side storage options are available to web applications, but one area that's been lacking until now is file I/O - the ability to organize binary data into a true hierarchy of folders. That has changed with the advent of HTML5. With this book, you'll learn how to provide your applications with a file system that enables them to create, read, and write files and folders in a sandboxed section of the user's local filesystem. Author Eric Bidelman, a Senior Developer Programs Engineer on the Google Chrome team, provides several techniques and complete code examples for working with the HTML5 Filesystem API. * Learn common operations for working with files and directories * Become familiar with HTML5's storage use cases and security considerations * Understand the storage options available, including temporary, persistent, and unlimited * Write text or append data to an existing user file * Import files into your application by accessing a user's hard drive * Get techniques for using a file with filesystem, blob, or data URLs * Use the synchronous version of the HTML5 Filesystem API within a Web Worker context