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

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.

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

Do you enjoy writing software, except for the database code? "Hibernate: A Developer's Notebook" is for you.

Database experts may enjoy fiddling with SQL, but you don't have to--the rest of the application is the fun part. And even database experts dread the tedious plumbing and typographical spaghetti needed to put their SQL into a Java program. "Hibernate: A Developers Notebook" shows you how to use Hibernate to automate persistence: you write natural Java objects and some simple configuration files, and Hibernate automates all the interaction between your objects and the database. You don't even need to know the database is there, and you can change from one database to another simply by changing a few statements in a configuration file.

"Hibernate: A Developer's Notebook" walks you through the ins and outs of using Hibernate, from installation and configuration, to complex associations and composite types. Two chapters explore ways to write sophisticated queries, which you can express either through a pure Java API, or with an SQL-inspired, but object-oriented, query language. Don't let that intimidate you though: one of the biggest surprises in working with Hibernate is that for many of the common real-world application scenarios, you don't need an explicit query at all.

If you've needed to add a database backend to your application, don't put it off. It's much more fun than it used to be, and "Hibernate: A Developer's Notebook" shows you why.

Here's what a few reviewers had to say:

"I'm sitting on an airplane after finishing "Hibernate: A Developer's Notebook," It's rare to find a book on a new Java technology that you can get through on a domestic flight. Thatthis notebook effectively and succinctly tackles object-relational mapping makes it, and Hibernate, even more impressive. Many books in this category would need to be checked luggage. With this book, you travel first class." --Mike Clark

"A simple persistence framework deserves a simple book, and this one delivers. The examples are well described and easy to understand, yet sophisticated enough to demonstrate Hibernate in a real-world context. Jim, I'm a new fan." --Bruce Tate

About the new Developer's Notebook Series from O'Reilly:

Developer's Notebooks are a new book series covering important new tools for software developers. Developer's Notebooks stress example over explanation and practice over theory. They are about learning by doing; by experimenting with tools and discovering what works. "All lab, no lecture," with a thoughtful lab partner to guide the way.

If you understand the basics of HTML5, CSS, and JavaScript and want to make quick sense of the extensive but often overwhelming reference documentation on D3.js, this short book is for you. Philipp K. Janert, author of Data Analysis with Open Source Tools (O'Reilly), provides a concise roadmap to this library, including its conventions and foundational concepts. D3.js for the Impatient is concise, yet comprehensive. Janert presents an overall survey of working with D3.js, while steering clear of long-winded and meandering explanations. Right away, this first chapter shows you how to create simple graphs and tackle two of the library's more unusual aspects: selecting and binding-the way D3.js uses DOM nodes to represent data visually. From there, you can easily explore individual chapters that adhere to your particular interests.

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.

Understanding UI patterns is invaluable to anyone creating websites for the first time. It helps you make connections between which tools are right for which jobs, understand the processes, and think deeply about the context of a problem. This is your concise guide to the tested and proven general mechanisms for solving recurring user interface problems, so that you don't have to reinvent the wheel. You'll see how to find a pattern you can apply to a given UI problem and how to deconstruct patterns to understand them in depth, including their constraints. UI patterns lead to better use of existing conventions and converging web standards. This book shows you how to spot anti-patterns, how to mix and match patterns, and how they inform design systems. By helping the non-web professionals and junior web professionals of the world use basic patterns, the web industry can put its best foot forward as new interfaces such as VR/AR/MR, conversational UIs, machine learning, voice input, evolving gestural interactions and more infiltrate the market. Given the emerging popularity of design systems and space of DesignOps, as well as the rise of companies competing on design and usability, now is the time to think about how we use and evolve UI patterns and scale design systems. What You'll Learn Produce intuitive products through consistency and familiarity. Save time instead of starting from scratch. Communicate design decisions with evidence to support solutions. Use smart defaults without extensive product design experience. Improve a user's experience. Scale growing business with design. Who This Book Is For Those familiar with creating websites and want to learn more, WordPress bloggers, or marketers who want to weave components together into a usable, revenue-generating experience.

See how XML works for business needs and RSS feeds
Create consistency on the Web, or tag your data for different purposes
Tag -- XML is it! XML tags let you share your format as well as your data, and this handy guide will show you how. You'll soon be using this markup language to create everything from Web sites to business forms, discovering schemas and DOCTYPES, wandering the Xpath, teaming up XML with Office 2003, and more.
Discover how to
* Make information portable
* Use XML with Word 2003
* Store different types of data
* Convert HTML documents to XHTML
* Add CSS to XML
* Understand and use DTDs

Here's what Web designers need to know to create dynamic, database-driven Web sites

To be on the cutting edge, Web sites need to serve up HTML, CSS, and products specific to the needs of different customers using different browsers. An effective e-commerce site gathers information about users and provides information they need to get the desired result.

PHP scripting language with a MySQL back-end database offers an effective way to design sites that meet these requirements. This full updated 4th Edition of "PHP & MySQL For Dummies" gets you quickly up to speed, even if your experience is limited.Explains the easy way to install and set up PHP and MySQL using XAMPP, so it works the same on Linux, Mac, and WindowsShows you how to secure files on a Web host and how to write secure codePacked with useful and understandable code examples for Web site creators who are not professional programmersFully updated to ensure your code will be compliant based on PHP 5.3 and MySQL 5.1.31Provides clear, accurate code examples

"PHP & MySQL For Dummies, 4th Edition" provides what you need to know to create sites that get results.

Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Come on a tour of "modern" CSS in 2020. This example-driven book demonstrates the concepts by showing code examples, screenshots, and diagrams to help clearly communicate the information. You'll start with the very basics of CSS: box model, colors, selectors and combinators, and specificity. Then gradually move through more intermediate topics - styling text, positioning, Z-index and stacking contexts, gradients, borders, and then to more advanced topics such as transforms, transitions, animations, flexbox, and CSS grid. Some features are only available in modern browsers (Chrome, Edge, Safari, and Firefox), but information about IE11 compatibility is included where possible. There is a lot of discussion about how hard CSS is, and how intimidated some people are by it, but it doesn't have to be this way. Modern CSS uses a logical and understandable approach to break down and clearly explain the ins and outs of CSS. What You'll Learn Work with the syntax of CSS selectors and calculate specificity Use styling techniques, fonts and text styling Review custom properties (variables) Explore the different ways an element can be transformed Use animating elements with CSS transitions Position elements using Flexbox layout Understand the basics of responsive design Who This Book Is For Anyone who has some experience with HTML, and some CSS, but might not be familiar with some of the newer concepts like flexbox or grid. Also, those looking for a refresher in those areas.

For courses in introductory Computer Science courses using Java, and other introductory programming courses in Computer Science, Computer Engineering, CIS, MIS, IT, and Business. Ideal for a wide range of introductory computer science courses, Java: An Introduction to Problem Solving and Programming, 8th Edition introduces students to object-oriented programming and important concepts such as design, testing and debugging, programming style, interfaces and inheritance, and exception handling. A concise, accessible introduction to Java, the text covers key Java language features in a manner that resonates with introductory programmers. Objects are covered early and thoroughly in the text. The author's tried-and-true pedagogy incorporates numerous case studies, programming examples, and programming tips, while flexibility charts and optional graphics sections allow instructors to order chapters and sections based on their course needs. This 8th Edition incorporates new examples, updated material, and revisions.

"Python Forensics" provides many never-before-published proven forensic modules, libraries, and solutions that can be used right out of the box. In addition, detailed instruction and documentation provided with the code samples will allow even novice Python programmers to add their own unique twists or use the models presented to build new solutions.

Rapid development of new cybercrime investigation tools is an essential ingredient in virtually every case and environment. Whether you are performing post-mortem investigation, executing live triage, extracting evidence from mobile devices or cloud services, or you are collecting and processing evidence from a network, Python forensic implementations can fill in the gaps.

Drawing upon years of practical experience and using numerous examples and illustrative code samples, author Chet Hosmer discusses how to: Develop new forensic solutions independent of large vendor software release schedules Participate in an open-source workbench that facilitates direct involvement in the design and implementation of new methods that augment or replace existing tools Advance your career by creating new solutions along with the construction of cutting-edge automation solutions to solve old problems
Provides hands-on tools, code samples, and detailed instruction and documentation that can be put to use immediatelyDiscusses how to create a Python forensics workbenchCovers effective forensic searching and indexing using PythonShows how to use Python to examine mobile device operating systems: iOS, Android, and Windows 8 Presents complete coverage of how to use Python scripts for network investigation

Understand the technical foundations, as well as the non-programming skills needed to be a successful full stack web developer. This book reveals the reasons why a truly successful full stack developer does more than write code. You will learn the principles of the topics needed to help a developer new to agile or full stack working-UX, project management, QA, product management, and more- all from the point of view of a developer. Covering these skills alongside the fundamentals and foundations of modern web development, rather than specifics of current technologies and frameworks (which can age quickly), all programming examples are given in the context of the web as it is in 2018. Although you need to feel comfortable working on code at the system, database, API, middleware or user interface level, depending on the task in hand, you also need to be able to deal with the big picture and the little details. The Full Stack Developer recognizes skills beyond the technical, and gives foundational knowledge of the wide set of skills needed in a modern software development team. What You'll Learn Plan your work including Agile vs Waterfall, tools, scrum, kanban and continuous delivery Translate UX into code: grids, component libraries and style guides Design systems and system architectures (microservices to monoliths) Review patterns for APIs (SOAP, AJAX, REST), defining API domains, patterns for REST APIs and more API goodness Study the various front-end design patterns you need to know Store data, what to consider for security, deployment, in production and more Who This Book Is For New graduates or junior developers who are transitioning to working as part of a larger team structure in a multi-disciplinary teams and developers previously focused on only front-end or back-end dev transitioning into full stack.

Learn to build modern, secure, highly available web MVC applications and API's using Python`s Flask framework. Key Features Create production-ready MVC and REST API with the dynamic features of Flask Utilize the various extensions like Flask-JWT and Flask-SQLAlchemy to develop powerful applications Deploy your flask application on real-world platforms like AWS and Heroku on VM's or Docker containers Book DescriptionFlask is a popular Python framework known for its lightweight and modular design. Mastering Flask Web Development will take you on a complete tour of the Flask environment and teach you how to build a production-ready application. You'll begin by learning about the installation of Flask and basic concepts such as MVC and accessing a database using an ORM. You will learn how to structure your application so that it can scale to any size with the help of Flask Blueprints. You'll then learn how to use Jinja2 templates with a high level of expertise. You will also learn how to develop with SQL or NoSQL databases, and how to develop REST APIs and JWT authentication. Next, you'll move on to build role-based access security and authentication using LDAP, OAuth, OpenID, and database. Also learn how to create asynchronous tasks that can scale to any load using Celery and RabbitMQ or Redis. You will also be introduced to a wide range of Flask extensions to leverage technologies such as cache, localization, and debugging. You will learn how to build your own Flask extensions, how to write tests, and how to get test coverage reports. Finally, you will learn how to deploy your application on Heroku and AWS using various technologies, such as Docker, CloudFormation, and Elastic Beanstalk, and will also learn how to develop Jenkins pipelines to build, test, and deploy applications. What you will learn Develop a Flask extension using best practices Implement various authentication methods: LDAP, JWT, Database, OAuth, and OpenID Learn how to develop role-based access security and become an expert on Jinja2 templates Build tests for your applications and APIs Install and configure a distributed task queue using Celery and RabbitMQ Develop RESTful APIs and secure REST API's Deploy highly available applications that scale on Heroku and AWS using Docker or VMs Who this book is forThe ideal target audience for this book would be Python developers who want to use Flask and its advanced features to create Enterprise grade and lightweight applications. The book is for those who have some exposure of Flask and want to take it from introductory to master level.

The Elixir programming language has become a go-to tool for creating reliable, fault-tolerant, and robust server-side applications. Thanks to Nerves, those same exact benefits can be realized in embedded applications. This book will teach you how to structure, build, and deploy production grade Nerves applications to network-enabled devices. The weather station sensor hub project that you will be embarking upon will show you how to create a full stack IoT solution in record time. You will build everything from the embedded Nerves device to the Phoenix backend and even the Grafana time-series data visualizations. Elixir as a programming language has found its way into many different software domains, largely in part to the rock-solid foundation of the Erlang virtual machine. Thanks to the Nerves framework, Elixir has also found success in the world of embedded systems and IoT. Having access to all of the Elixir and OTP constructs such as concurrency, supervision, and immutability makes for a powerful IoT recipe. Find out how to create fault-tolerant, reliable, and robust embedded applications using the Nerves framework. Build and deploy a production-grade weather station sensor hub using Elixir and Nerves, all while leveraging the best practices established by the Nerves community for structuring and organizing Nerves applications. Capture all of your weather station sensor data using Phoenix and Ecto in a lightweight server-side application. Efficiently store and retrieve the time-series weather data collected by your device using TimescaleDB (the Postgres extension for time-series data). Finally, complete the full stack IoT solution by using Grafana to visualize all of your time-series weather station data. Discover how to create software solutions where the underlying technologies and techniques are applicable to all layers of the project. Take your project from idea to production ready in record time with Elixir and Nerves.

Description Manning's bestselling Java 8 book has been revised for Java 9! In Java 8 and 9 in Action, readers build on their existing Java language skills with the newest features and techniques. The release of Java 9 builds on what made Java 8 so exciting. In addition to Java 8's lambdas and streams, Java 9 adds a host of new features of its own. It includes new library features to support reactive programming, which give users new ways of thinking about programming and writing code that is easier to read and maintain. Key Features * Contains all of Java 9's new features * The Java Module System * Testing and debugging with lambdas Audience This book is written for programmers familiar with Java and basic OO programming. About the Technology Java 9 introduces the long-awaited Java Module System. Modules encourage users to write their code in smaller units that are easier to test, manage and release. Java 9 also helps programmers by enriching the functional-programming and streams features of Java 8.

Spring is a massive ecosystem and a must-learn tool for Java developers. Spring Start Here introduces you to Java development with Spring by concentrating on the core concepts you'll use in every application you build. You'll learn how to refactor an existing application to Spring, how to use Spring tools to make SQL database requests and REST calls, and how to secure your projects with Spring Security. Spring Start Here teaches you how to build professional-quality applications using Spring and Spring Boot. You'll start with the core components of the framework and then learn how features like Spring Boot simplify the tedious repetitive tasks you face in every project. When you're done, you'll be able to create Spring apps, secure them with authentication and authorization, and move on to the next exciting steps of your Spring journey. Spring Framework is packed with features to make your applications fast, maintainable, robust and secure. This extensive ecosystem of tools for cloud computing, microservices, and more have made it the de facto choice for building enterprise Java applications.

Truly revolutionary: now you can write geolocation applications directly in the browser, rather than develop native apps for particular devices. This concise book demonstrates the W3C Geolocation API in action, with code and examples to help you build HTML5 apps using the "write once, deploy everywhere" model. Along the way, you get a crash course in geolocation, browser support, and ways to integrate the API with common geo tools like Google Maps. Ideal for experienced JavaScript developers. Learn how geo information is gathered from different sources, depending on the device Discover how coordinate systems work, including geodetic systems and datums Use the API to collect location information from a user's browser with JavaScript code Place geo information on a map using the Google Maps or ArcGIS JavaScript APIs Save geo data with databases, the Keyhole Markup Language, or the shapefile format Be familiar with several practical uses for geo data, such as geomarketing, geosocial, geotagging, and geo-applications

This comprehensive guide shows you how to master the most important changes to Java since it was first released. Generics and the greatly expanded collection libraries have tremendously increased the power of Java 5 and Java 6. But they have also confused many developers who haven't known how to take advantage of these new features. "Java Generics and Collections" covers everything from the most basic uses of generics to the strangest corner cases. It teaches you everything you need to know about the collections libraries, so you'll always know which collection is appropriate for any given task, and how to use it. Topics covered include: Fundamentals of generics: type parameters and generic methods; Other new features: boxing and unboxing, foreach loops, varargs; Subtyping and wildcards; Evolution not revolution: generic libraries with legacy clients and generic clients with legacy libraries; Generics and reflection; Design patterns for generics; Sets, Queues, Lists, Maps, and their implementations; Concurrent programming and thread safety with collections; ane Performance implications of different collections. Generics and the new collection libraries they inspired take Java to a new level. If you want to take your software development practice to a new level, this book is essential reading.

Today, jQuery is used by over half of the 10,000 most-visited web sites, and jQuery is one of the technologies that every web developer should master. The trouble is that jQuery is difficult to learn, especially for programming novices. Now, this new book makes it easier than ever to learn jQuery, jQuery UI (User Interface), and jQuery Mobile. In essence, sections 2 and 3 of this book present all of the jQuery and jQuery UI skills that you need for developing professional jQuery applications. With those skills, you will be able to add all of the popular jQuery applications to your web pages: image swaps, image rollovers, collapsible panels, slide shows, accordions, tabs, carousels, and more. Beyond that, though, you will have all the skills that you need for developing unique jQuery applications of your own. But that's just two of the five sections in the book. Because you need to know JavaScript in order to use jQuery, section 1 presents the least you need to know about JavaScript to get the most from jQuery. This is essential for programming novices, but this is also valuable for experienced programmers who may not remember how a specific JavaScript statement or method works. In short, this section makes this book a complete reference for jQuery programmers. In contrast, section 4 takes jQuery to a new level by showing you how to use Ajax and JSON to get data from a web server and add it to a web page without reloading the page. It also shows how to use Ajax and JSON with the APIs for popular web sites like Blogger, YouTube, Twitter, Flickr, and Google Maps. These are powerful skills for enhancing a web site. To complete this package, section 5 presents a complete course in jQuery Mobile, which offers an exciting, new way to develop web sites for mobile devices. Today, the best web sites are available in both full and mobile versions, so this section also shows how to use a JavaScript plugin to redirect a mobile device from the full version of a web site to its mobile version.

Build dynamic web applications with Express, a key component of the Node/JavaScript development stack. In this updated edition, author Ethan Brown teaches you Express fundamentals by walking you through the development of an example application. This hands-on guide covers everything from server-side rendering to API development suitable for use in single-page apps (SPAs). Express strikes a balance between a robust framework and no framework at all, allowing you a free hand in your architecture choices. Frontend and backend engineers familiar with JavaScript will also learn best practices for building multipage and hybrid web apps with Express. Pick up this book and discover new ways to look at web development. Create a templating system for rendering dynamic data Dive into request and response objects, middleware, and URL routing Simulate a production environment for testing Persist data in document databases with MongoDB and relational databases with PostgreSQL Make your resources available to other programs with APIs Build secure apps with authentication, authorization, and HTTPS Integrate with social media, geolocation, and more Implement a plan for launching and maintaining your app Learn critical debugging skills

Quickly ramp up your practical knowledge of Apache JMeter for software performance testing and focus on actual business problems. This step-by-step guide covers what you will need to know to write and execute test scripts, and verify the results. Pro Apache JMeter covers almost every aspect of Apache JMeter in detail and includes helpful screenshots and a case study. A performance primer chapter provides a high-level summary of terms used in performance testing on a day-to-day basis that also is useful for non-technical readers. A sample web application Digital Toys has been developed and test scripts are provided for you to try while progressing through the chapters. What You'll Learn Create and execute an Apache JMeter test plan Interpret the results of your test plan Understand distributed testing using Apache JMeter Use Apache JMeter advanced features such as JDBC, REST, FTP, AJAX, SOAP, and mobile performance testing Read a sample case study covering end-to-end planning and execution of a performance testing project Generate and analyze a performance dashboard Who This Book Is For Software performance testing professionals, quality assurance professionals, architects, engineers, project managers, product managers

Go beyond the basics of D3.js to create maintainable, modular, and testable charts and to package them into a library that can be distributed as open source software or kept for private use. This book will show you how to transform regular D3.js chart code into reusable and extendable modules. You know the basics of working with D3.js, but it's time to become a professional D3.js practitioner. This book is your launching pad to refactoring code, composing complex visualizations from small components, working as a team with other developers, and integrating charts with a Continuous Integration system. You'll begin by creating a production-ready chart using D3.js v5, ES2015, and a test-driven approach and then move on to using and extending Britecharts, the reusable charting library based on Reusable API patterns. Finally, you'll see how to use D3.js along with React to document and build your charts to compose a charting library you can release into the NPM repository. With Pro D3.js, you'll become an accomplished D3.js developer in no time. What You Will Learn Create v5 D3.js charts with ES2016 and unit tests Develop modular, testable and extensible code with the Reusable API pattern Work with and extend Britecharts, a reusable charting library created at Eventbrite Use Webpack and npm to create and publish a charting library from your own chart collections Write reference documentation and build a documentation homepage for your library. Who This Book Is For Data scientists, data visualization engineers, and frontend developers with a fundamental knowledge of D3.js and some experience with JavaScript, as well as data journalists and consultants.

This guide teaches programmers who have been left behind in the IBM i's evolution to code more productively and modernize their business applications. Shirey uses a casual, humorous teaching style to explain the concepts, along with plenty of code examples. Readers will gain confidence in areas that may be new to them and use the provided examples to practice what they've learned. The manual is structured so that whether they are using the latest IBM i technology or an older version, readers will learn methods to improve coding and applications, as well as become comfortable with writing programs using ILE RPG, free-format RPG, and Model-View-Controller (MVC).