Discover how to use the next-generation language Red for full-stack development, from systems coding over user-interfaces to blockchain programming About This Book ? Explore the latest features of Red to build scalable, fast, and secure applications ? Learn graphical programming and build highly sophisticated reactive applications ? Get familiar with the specific concepts and techniques of Red development, like working with series, viewing code as data, and using dialects. Who This Book Is For This book is for software developers and architects who want to learn Red because of its conciseness, flexibility, and expressiveness, and more specifically for its possibilities in GUI apps and blockchain / smart contracts programming. Some knowledge of the basic concepts and experience of any programming language is assumed. What You Will Learn ? Set up your Red environment to achieve the highest productivity ? Get grounded in Red, gaining experience and insight through many examples and exercises ? Build simple, compact, and portable applications ? Analyze streams of data through Parse ? Compose GUI applications with View and Draw ? Get prepared for smart contract blockchain programming in Red In Detail A key problem of software development today is software bloat, where huge toolchains and development environments are needed in software coding and deployment. Red significantly reduces this bloat by offering a minimalist but complete toolchain. This is the first introductory book about it, and it will get you up and running with Red as quickly as possible. This book shows you how to write effective functions, reduce code redundancies, and improve code reuse. It will be helpful for new programmers who are starting out with Red to explore its wide and ever-growing package ecosystem and also for experienced developers who want to add Red to their skill set. The book presents the fundamentals of programming in Red and in-depth informative examples using a step-by-step approach. You will be taken through concepts and examples such as doing simple metaprogramming, functions, collections, GUI applications, and more. By the end of the book, you will be fully equipped to start your own projects in Red. Style and approach This book will gently guide you step by step into the fascinating programming universe of the Red language, offering real-world examples and practical exercises to sharpen your insight.

Explore the features included in the latest versions of MQTT for IoT and M2M communications and use them with modern Python 3. About This Book ? Make your connected devices less prone to attackers by understanding security mechanisms ? Take advantage of MQTT features for IoT and Machine-to-Machine communications ? The only book that covers MQTT with a single language, Python Who This Book Is For This book is for developers who want to learn about the MQTT protocol for their IoT projects. Prior knowledge of working with IoT and Python will be helpful. What You Will Learn ? Learn how MQTT and its lightweight messaging system work ? Understand the MQTT puzzle: clients, servers (formerly known as brokers), and connections ? Explore the features included in the latest versions of MQTT for IoT and M2M communications ? Publish and receive MQTT messages with Python ? Learn the difference between blocking and threaded network loops ? Take advantage of the last will and testament feature ? Work with cloud-based MQTT interfaces in Python In Detail MQTT is a lightweight messaging protocol for small sensors and mobile devices. This book explores the features of the latest versions of MQTT for IoT and M2M communications, how to use them with Python 3, and allow you to interact with sensors and actuators using Python. The book begins with the specific vocabulary of MQTT and its working modes, followed by installing a Mosquitto MQTT broker. You will use different utilities and diagrams to understand the most important concepts related to MQTT. You will learn to?make all the necessary configuration to work with digital certificates for encrypting all data sent between the MQTT clients and the server. You will also work with the different Quality of Service levels and later analyze and compare their overheads. You will write Python 3.x code to control a vehicle with MQTT messages delivered through encrypted connections (TLS 1.2), and learn how leverage your knowledge of the MQTT protocol to build a solution based on requirements. Towards the end, you will write Python code to use the PubNub cloud-based real-time MQTT provider to monitor a surfing competition. In the end, you will have a solution that was built from scratch by analyzing the requirements and then write Python code that will run on water-proof IoT boards connected to multiple sensors in surfboards. Style and approach This book shows you what MQTT is, and how to install and secure an MQTT server. You will write Python 3 code to control a vehicle with MQTT messages, test and improve, then monitor a surfing competition with cloud-based real-time MQTT providers.

Connect things to create amazing IoT applications in minutes About This Book ? Use Blynk cloud and Blynk server to connect devices ? Build IoT applications on Android and iOS platforms ? A practical guide that will show how to connect devices using Blynk and Raspberry Pi 3 Who This Book Is For This book is targeted at any stakeholder working in the IoT sector who wants to understand how Blynk works and build exciting IoT projects. Prior understanding of Raspberry Pi, C/C++, and electronics is a must. What You Will Learn ? Build devices using Raspberry Pi and various sensors and actuators ? Use Blynk cloud to connect and control devices through the Blynk app ? Connect devices to Blynk cloud and server through Ethernet and Wi-Fi ? Make applications using Blynk apps (App Builder) on Android and iOS platforms ? Run Blynk personal server on the Windows, MAC, and Raspberry Pi platforms In Detail Blynk, known as the most user-friendly IoT platform, provides a way to build mobile applications in minutes. With the Blynk drag-n-drop mobile app builder, anyone can build amazing IoT applications with minimal resources and effort, on hardware ranging from prototyping platforms such as Arduino and Raspberry Pi 3 to industrial-grade ESP8266, Intel, Sierra Wireless, Particle, Texas Instruments, and a few others. This book uses Raspberry Pi as the main hardware platform and C/C++ to write sketches to build projects. The first part of this book shows how to set up a development environment with various hardware combinations and required software. Then you will build your first IoT application with Blynk using various hardware combinations and connectivity types such as Ethernet and Wi-Fi. Then you'll use and configure various widgets (control, display, notification, interface, time input, and some advanced widgets) with Blynk App Builder to build applications. Towards the end, you will learn how to connect with and use built-in sensors on Android and iOS mobile devices. Finally you will learn how to build a robot that can be controlled with a Blynk app through the Blynk cloud and personal server. By the end of this book, you will have hands-on experience building IoT applications using Blynk. Style and approach A step-by-step guide that will help you build simple yet exciting project in no time.

A definitive guide to creating an intelligent web application with the best of machine learning and JavaScript About This Book ? Solve complex computational problems in browser with JavaScript ? Teach your browser how to learn from rules using the power of machine learning ? Understand discoveries on web interface and API in machine learning Who This Book Is For This book is for you if you are a JavaScript developer who wants to implement machine learning to make applications smarter, gain insightful information from the data, and enter the field of machine learning without switching to another language. Working knowledge of JavaScript language is expected to get the most out of the book. What You Will Learn ? Get an overview of state-of-the-art machine learning ? Understand the pre-processing of data handling, cleaning, and preparation ? Learn Mining and Pattern Extraction with JavaScript ? Build your own model for classification, clustering, and prediction ? Identify the most appropriate model for each type of problem ? Apply machine learning techniques to real-world applications ? Learn how JavaScript can be a powerful language for machine learning In Detail In over 20 years of existence, JavaScript has been pushing beyond the boundaries of web evolution with proven existence on servers, embedded devices, Smart TVs, IoT, Smart Cars, and more. Today, with the added advantage of machine learning research and support for JS libraries, JavaScript makes your browsers smarter than ever with the ability to learn patterns and reproduce them to become a part of innovative products and applications. Hands-on Machine Learning with JavaScript presents various avenues of machine learning in a practical and objective way, and helps implement them using the JavaScript language. Predicting behaviors, analyzing feelings, grouping data, and building neural models are some of the skills you will build from this book. You will learn how to train your machine learning models and work with different kinds of data. During this journey, you will come across use cases such as face detection, spam filtering, recommendation systems, character recognition, and more. Moreover, you will learn how to work with deep neural networks and guide your applications to gain insights from data. By the end of this book, you'll have gained hands-on knowledge on evaluating and implementing the right model, along with choosing from different JS libraries, such as NaturalNode, brain, harthur, classifier, and many more to design smarter applications. Style and approach This is a practical tutorial that uses hands-on examples to step through some real-world applications of machine learning. Without shying away from the technical details, you will explore machine learning with JavaScript using clear and practical examples.

A hands-on guide with a minimalist and flexible approach that enables quick learning and rapid delivery of cloud-ready enterprise applications with Angular 6 About This Book ? Explore tools and techniques to push your web app to the next level ? Master Angular app design and architectural considerations ? Learn continuous integration and deploy your app on a highly available cloud infrastructure in AWS Who This Book Is For This book is for developers who want to confidently deliver high-quality and production-grade Angular apps from design to deployment. We assume that you have prior experience in writing a RESTful API with the tech stack of your choice; if you don't, you can still gain a lot of benefit from this book, which focuses on the entire scope of frontend development, from design to deployment! What You Will Learn ? Create full-stack web applications using Angular and RESTful APIs ? Master Angular fundamentals, RxJS, CLI tools, unit testing, GitHub, and Docker ? Design and architect responsive, secure and scalable apps to deploy on AWS ? Adopt a minimalist, value-first approach to delivering your app with Kanban ? Get introduced to automated testing with continuous integration on CircleCI ? Optimize Nginx and Node.js web servers with load testing tools In Detail Angular 6 for Enterprise-Ready Web Applications follows a hands-on and minimalist approach demonstrating how to design and architect high quality apps. The first part of the book is about mastering the Angular platform using foundational technologies. You will use the Kanban method to focus on value delivery, communicate design ideas with mock-up tools and build great looking apps with Angular Material. You will become comfortable using CLI tools, understand reactive programming with RxJS, and deploy to the cloud using Docker. The second part of the book will introduce you to the router-first architecture, a seven-step approach to designing and developing mid-to-large line-of-business applications, along with popular recipes. You will learn how to design a solid authentication and authorization experience; explore unit testing, early integration with backend APIs using Swagger and continuous integration using CircleCI. In the concluding chapters, you will provision a highly available cloud infrastructure on AWS and then use Google Analytics to capture user behavior. By the end of this book, you will be familiar with the scope of web development using Angular, Swagger, and Docker, learning patterns and practices to be successful as an individual developer on the web or as a team in the Enterprise. Style and approach The book follows a hands-on, value-first methodology to help readers design and architect small and large applications, while covering ancillary topics that all web developers should be aware of. The book uses minimal and flexible tools and techniques to enable quick learning and rapid delivery of high-quality and reliable Angular applications.

Be an adaptive thinker that leads the way to Artificial Intelligence About This Book ? AI-based examples to guide you in designing and implementing machine intelligence ? Develop your own method for future AI solutions ? Acquire advanced AI, machine learning, and deep learning design skills Who This Book Is For Artificial Intelligence by Example is a simple, explanatory, and descriptive guide for junior developers, experienced developers, technology consultants, and those interested in AI who want to understand the fundamentals of Artificial Intelligence and implement it practically by devising smart solutions. Prior experience with Python and statistical knowledge is essential to make the most out of this book. What You Will Learn ? Use adaptive thinking to solve real-life AI case studies ? Rise beyond being a modern-day factory code worker ? Acquire advanced AI, machine learning, and deep learning designing skills ? Learn about cognitive NLP chatbots, quantum computing, and IoT and blockchain technology ? Understand future AI solutions and adapt quickly to them ? Develop out-of-the-box thinking to face any challenge the market presents In Detail Artificial Intelligence has the potential to replicate humans in every field. This book serves as a starting point for you to understand how AI is built, with the help of intriguing examples and case studies. Artificial Intelligence By Example will make you an adaptive thinker and help you apply concepts to real-life scenarios. Using some of the most interesting AI examples, right from a simple chess engine to a cognitive chatbot, you will learn how to tackle the machine you are competing with. You will study some of the most advanced machine learning models, understand how to apply AI to blockchain and IoT, and develop emotional quotient in chatbots using neural networks. You will move on to designing AI solutions in a simple manner rather than get confused by complex architectures and techniques. This comprehensive guide will be a starter kit for you to develop AI applications on your own. By the end of this book, will have understood the fundamentals of AI and worked through a number of case studies that will help you develop business vision. Style and approach An easy-to-follow step by step guide which will help you get to grips with real world application of Artificial Intelligence

How to ruin a perfectly good divorce The last time Rose Tucker saw her ex-husband, Lincoln Hart, he was fleeing their newly minted marriage. Now the man she fell in love with at first sight has returned to say those three little words: "we’re still married!" And while the lawyers fix the clerical glitch, the handsome millionaire offers a way to help his not so ex-wife save her business. The pretty interior designer can hardly wait to say, “I don’t.” But in the meantime, Rose can’t afford to turn down her husband’s job offer. So she agrees to decorate Linc’s new luxury condo. While Rose draws up plans for his home, he has designs on her heart. And if he gets his way, the new towels will say his and hers.

Finding love twice in a lifetime! When Lucy Brooks lost her husband, her dreams of a family went with him. Now her life is a busy balance of friends, work and the demands of her small ranch. When she meets handsome, brooding Noah Spencer, she recognises grief in his penetrating eyes. And yet she can't deny the feelings – and hope – that he reawakens within her. All widower Noah has in life is his little daughter and a fresh start as Stonerock's newest police officer. Right now he needs to keep his life simple and his heart guarded. Yet he can't resist the instant pull of sweet, selfless Lucy. This could be a second chance at living happily-ever-after…

The ebook bestseller is back with her next hilarious read – a fun, fresh tale of love, friendship and family secrets… When Holly breaks up with her boyfriend Dean, she’s at a loss as to what to do next. But things go from bad to worse when her beloved grandmother Ivy dies – and Holly is left in charge of sorting out Ivy’s house and garden. As she sorts through her grandmother’s belongings and makes her way through the wilderness outside, Holly soon finds that there is more to Ivy than meets the eye, and uncovers a surprising family secret that changes everything… This is a heart-warming and hilarious story from Catherine Ferguson about starting over, learning to garden and most of all learning to love.

USA Today bestselling author of The Girl Who Lied and Sister Sister Dear Carys, Zoe and Andrea Come and join me for my fortieth birthday adventure weekend, full of mysteries and surprises the like of which you can’t imagine. When Joanne’s friends reluctantly accept an invitation to her birthday party, it quickly becomes clear that there is more to this weekend than they are expecting. One of them is hiding a secret. And Joanne is planning to reveal it… A weekend away in a cottage in the woods sounds like fun – until no one can hear your cries for help. Four friends. A party to die for. Who will survive?

From passion to pregnancy! An encounter with Rafael Valentino is broken-hearted Cassandra Larrobee’s chance to live in the moment! It was supposed to be one night only, but the sinfully hot doc has left her with more than just memories… Since a heart-breaking decision years ago, Rafe is determined to remain alone—but when he’s sent to work with Cassie, he can’t resist their reckless kisses! When he discovers Cassie’s shocking surprise, can Rafe let her bring light into his shadowed life…and become a daddy to their baby? Hot Latin Docs Sultry, sexy bachelor brothers on the loose!

He might have the good looks of a modern day Viking, but Dr Brodie McClellan has brooding down to an art. He’s only recently returned to the Isle of Dunregan and already the demons of his past are pushing him to the edge. Running from her own troubled past, this remote posting is heaven-sent for locum Dr Kali O’Shea. And Brodie makes her long to find her true home in Scotland…in her new boss’s arms!

‘Beautiful, real and devastating’ Sarah J. Maas A moving story of grief, friendship and unforgettable love that fans of Sara Bernard and Nicola Yoon will love from international YA bestselling author Jennifer Armentrout. Lena has always felt immortal. But one night can change everything. Lena and Sebastian have been close for as long as anyone can remember. Best friends, even. But secretly Lena has been wanting something more—Sebastian could be more than a friend, if only Lena could figure out how to convince him that they could, and should be together. But in a single night, after a single party, everything changes and suddenly Lena isn’t thinking about her relationship with Sebastian at all. The only thing she’s thinking about is trying to piece together what happened that night, and how she was the sole survivor in an accident that left 4 of her friends dead. Even as her friends and family try to rally around her, Lena pushes them away as the memory of the accident begins to resurface. How will they ever forgive her for what she did? How will Sebastian forgive her? And how will she ever forgive herself?

Anne O’Brien’s new novel, Queen of the North, is available to pre-order now England’s Forgotten Queens ‘Anne O’Brien has joined the exclusive club of excellent historical novelists.’ - Sunday Express ENGLAND'S MOST RUTHLESS QUEEN. July, 1137. In the baking sunshine of Bordeaux, Eleanor, Duchess of Aquitaine, eagerly awaits her first meeting with the prince who will become her husband. But Louis Capet is no fit match for educated, independent Eleanor. When he inherits the throne of France, it becomes clear that his monastic ways and indecisive rule could cost him his country – and his marriage. Determined to rule her own lands, Eleanor leads the men of Aquitaine on Crusade. The march to Outremer will make her the most scandalous woman in all of Christendom. And one chance meeting between Eleanor and Henry Plantagenet will change the fate of England – forever… Hers is a story of power, political intrigue, passion and love. Praise for Anne O’Brien: ‘One of the best writers around…she outdoes even Philippa Gregory’ The Sun ‘Her writing is highly evocative of the time period… O’Brien has produced an epic tale’ Historical Novel Society ‘Anne O’Brien’s novels give a voice to the “silent” women of history’ Yorkshire Post ‘Once again O’Brien proves herself a medieval history magician, conjuring up a sizzling, sweeping story’ Lancashire Evening Post ‘An exciting and intriguing story of love and historical politics. If you enjoy Philippa Gregory and Alison Weir you will love Anne O'Brien’ We Love This Book ‘A brilliantly researched and well-told story; you won’t be able to put this book down’ Candis ‘A fast paced historical drama that is full of suspense.’ Essentials

‘I was gripped immediately’ KATERINA DIAMOND, author of THE TEACHER ‘Terrific characterisation, great writing and twists to leave you dizzy.’ TERESA DRISCOLL, author of I AM WATCHING YOU Do you really know your friends? ** THE TOP 10 KINDLE BESTSELLER** On the afternoon of Nick and Lisa’s wedding, their close friend is found poised on a hotel window ledge, ready to jump. As the shock hits their friendship group, they soon realise that none of them are being as honest with themselves – or with each other – as they think. And there are secrets lurking that could destroy everything. Tense, disturbing and clever, My Husband’s Lies is a breath-taking read, perfect for fans of Lucy Clarke and Erin Kelly.

From the author of Neverness comes a powerful new epic fantasy series. The Ea Cycle is as rich as Tolkien and as magical as the Arthurian myths. The world of Ea is an ancient world settled in eons past by the Star People. However, their ancestors floundered, in their purpose to create a great stellar civilisation on the new planet: they fell into moral decay. Now a champion has been born who will lead them back to greatness, by means of a spiritual – and adventurous – quest for Ea’s Grail: the Lightstone. His name is Valashu Elahad, and he is destined to become King. Blessed (or cursed?) with an empathy for all living things, he will lead his people into the lands of Morjin, into the heart of darkness, wielding a magical sword called Alkadadur, there to recover the mythical Lightstone and return in triumph with his prize. But Morjin is not to be vanquished so easily…

First published in 1983, Heroes and Contemporaries reveals a new aspect of David Gower’s personality – that of an astute and intelligent observer of the game and of his fellow players. In this book he has chosen a collection of the people in cricket he most admires and has written about them in conversational style, with immediacy and critical appreciation. Gower’s encounters with these people behind the scenes – some of the most important players of our time – give us insight into their characters, their strengths and weaknesses, an insight which we would not normally have just by observing them on the field or by reading newspaper reports. His views on the captaincies of Bob Willis, Mike Brearley and Ian Botham are especially revealing. There is also displayed in this book considerable understanding of the psychology of such contemporaries as Ian Botham and Geoff Boycott, and an important chapter is included on Ray Illingworth, Gower’s staunchest champion and sternest critic. Although Heroes and Contemporaries is basically about other people, it also tells us a great deal about David Gower himself.

Lawyer Lennox Kemp’s newly-wed happiness is slowly being eroded by a series of anonymous threats. Is it an aggrieved past client? A criminal he has helped put away? His friend Detective Inspector John Upshire points out that there is a multiplicity of enemies from which to choose. But then a colleague of Kemp’s is murdered and Lennox is convinced that he was the intended victim. Weighed down by guilt, he feels disinclined to investigate the matter further, so it is left to his feisty wife Mary to follow the confusing clues. Is the murder connected to the anonymous threats and sabotage attempts against Kemp? or does it relate to the victim’s own affairs? A mysterious commission in London, an arrogant property dealer, an unbalanced young woman, are only some of the elements of the mystery which Mary must disentangle. But is she on the right path? And will Lennox regain his interest in the affair before another murder is committed? The return of Lennox Kemp, M. R. D. Meek’s popular lawyer sleuth, is an intricate and suspenseful puzzler that will delight his many fans.

A witty, wry look at contemporary marriage and relationships, from the author of For Matrimonial Purposes. Priya, growing up in a comfortable home in Delhi, is the youngest of four sisters, but the first for whom a marriage has been arranged – the other sisters all seem to have had a variety of reasons against husbands. Priya moves to Los Angeles where her new family have been established for some twenty years and while no woman in her family has ever had a job, she decides that in America, she should find one. And that's when the trouble begins… Her charm and dignity, as well as her discretion and sympathetic ways, raise her from receptionist to key interviewer on a glitzy media magazine in a short time. She knows that while a little job is OK with her in-laws, a career, western clothes and interviewing male stars in hotel rooms would be absolutely forbidden. So her double life – American career woman versus traditional Hindu wife – begins, and her longing for a different relationship with her husband grows. Funny and serious, full of rich comments on the pleasures and absurdities of life-styles in East and West, Everything Happens for a Reason is a charming contemporary novel, from a wonderful and unique author.

Leverage the power of PostgreSQL 10 to design, administer and maintain a high-performance database solution About This Book ? Obtain optimal PostgreSQL 10 database performance, ranging from initial design to routine maintenance ? Fine tune the performance of your queries and avoid the common pitfalls that can slow your system down ? Contains tips and tricks on scaling successful database installations, and ensuring a highly available PostgreSQL solution Who This Book Is For This book is designed for database administrators and PostgreSQL architects who already use or plan to exploit the features of PostgreSQL 10 to design and maintain a high-performance PostgreSQL database. A working knowledge of SQL, and some experience with PostgreSQL will be helpful in getting the most out of this book. What You Will Learn ? Learn best practices for scaling PostgreSQL 10 installations ? Discover the best hardware for developing high-performance PostgreSQL applications ? Benchmark your whole system – from hardware to application ? Learn by real examples how server parameters impact performance ? Discover PostgreSQL 10 features for partitioning and parallel query ? Monitor your server, both inside and outside the database ? Design and implement a good replication system on PostgreSQL 10 In Detail PostgreSQL database servers have a common set of problems that they encounter as their usage gets heavier and requirements get more demanding. Peek into the future of your PostgreSQL 10 database's problems today. Know the warning signs to look for and how to avoid the most common issues before they even happen. Surprisingly, most PostgreSQL database applications evolve in the same way—choose the right hardware, tune the operating system and server memory use, optimize queries against the database and CPUs with the right indexes, and monitor every layer, from hardware to queries, using tools from inside and outside PostgreSQL. Also, using monitoring insight, PostgreSQL database applications continuously rework the design and configuration. On reaching the limits of a single server, they break things up; connection pooling, caching, partitioning, replication, and parallel queries can all help handle increasing database workloads. By the end of this book, you will have all the knowledge you need to design, run, and manage your PostgreSQL solution while ensuring high performance and high availability Style and approach This book has been organized in such a manner that will help you understand basic PostgreSQL 10 performance tuning to an advanced-level configuration.

Design and implement scalable and maintainable RESTful solutions with Node.js 10 About This Book ? Create rich and scalable RESTful API solutions from scratch ? Explore the new features of Node.js 10, Express 4.0, and MongoDB ? Integrate MongoDB in your Node.js application to store and secure your data Who This Book Is For If you are a web developer keen to enrich your development skills to create server-side RESTful applications based on the Node.js platform, this book is for you. Some knowledge of REST would be an added advantage, but is definitely not a necessity. What You Will Learn ? Install, develop, and test your own Node.js user modules ? Understand the differences between HTTP and RESTful applications ? Use self-descriptive URLs and set accurate HTTP status codes ? Eliminate third-party dependencies in your tests with mocking ? Implement automation tests for a REST-enabled endpoint with Mocha ? Secure your services with NoSQL database integration within Node.js applications ? Integrate a simple frontend using JavaScript libraries available on a CDN server In Detail When building RESTful services, it is really important to choose the right framework. Node.js, with its asynchronous, event-driven architecture, is exactly the right choice for building RESTful APIs. This third edition of RESTful Web API Design with Node.js 10 will teach you to create scalable and rich RESTful applications based on the Node.js platform. You will be introduced to the latest NPM package handler and understand how to use it to customize your RESTful development process. You will begin by understanding the key principle that makes an HTTP application a RESTful-enabled application. After writing a simple HTTP request handler, you will create and test Node.js modules using automated tests and mock objects; explore using the NoSQL database, MongoDB, to store data; and get to grips with using self-descriptive URLs. You’ll learn to set accurate HTTP status codes along with understanding how to keep your applications backward-compatible. Also, while implementing a full-fledged RESTful service, you will use Swagger to document the API and implement automation tests for a REST-enabled endpoint with Mocha. Lastly, you will explore some authentication techniques to secure your application. Style and approach Step-by-step practical guide to building RESTful applications