A tutorial leading the aspiring Go developer to full mastery of Golang's distributed features. About This Book ? This book provides enough concurrency theory to give you a contextual understanding of Go concurrency ? It gives weight to synchronous and asynchronous data streams in Golang web applications ? It makes Goroutines and Channels completely familiar and natural to Go developers Who This Book Is For This book is for developers who are familiar with the Golang syntax and have a good idea of how basic Go development works. It would be advantageous if you have been through a web application product cycle, although it’s not necessary. What You Will Learn ? Gain proficiency with concurrency and parallelism in Go ? Learn how to test your application using Go's standard library ? Learn industry best practices with technologies such as REST, OpenAPI, Docker, and so on ? Design and build a distributed search engine ? Learn strategies on how to design a system for web scale In Detail Distributed Computing with Go gives developers with a good idea how basic Go development works the tools to fulfill the true potential of Golang development in a world of concurrent web and cloud applications. Nikhil starts out by setting up a professional Go development environment. Then you’ll learn the basic concepts and practices of Golang concurrent and parallel development. You’ll find out in the new few chapters how to balance resources and data with REST and standard web approaches while keeping concurrency in mind. Most Go applications these days will run in a data center or on the cloud, which is a condition upon which the next chapter depends. There, you’ll expand your skills considerably by writing a distributed document indexing system during the next two chapters. This system has to balance a large corpus of documents with considerable analytical demands. Another use case is the way in which a web application written in Go can be consciously redesigned to take distributed features into account. The chapter is rather interesting for Go developers who have to migrate existing Go applications to computationally and memory-intensive environments. The final chapter relates to the rather onerous task of testing parallel and distributed applications, something that is not usually taught in standard computer science curricula. Style and approach Distributed Computing with Go takes you through a series of carefully graded tutorials, building ever more sophisticated applications.

Leverage the power of Redis 4.x to develop, optimize and administer your Redis solutions with ease About This Book ? Build, deploy and administer high performance and scalable applications in Redis ? Covers a range of important tasks - including development and administration of Redis ? A practical guide that takes your understanding of Redis to the next level Who This Book Is For This book is for database administrators, developers and architects who want to tackle the common and not so common problems associated with the different development and administration-related tasks in Redis. A fundamental understanding of Redis is expected to get the best out of this book. What You Will Learn ? Install and configure your Redis instance ? Explore various data types and commands in Redis ? Build client-side applications as well as a Big Data framework with Redis ? Manage data replication and persistence in Redis ? Implement high availability and data sharding in Redis ? Extend Redis with Redis Module ? Benchmark, debug, fine-tune and troubleshoot various issues in Redis In Detail Redis is considered the world's most popular key-value store database. Its versatility and the wide variety of use cases it enables have made it a popular choice of database for many enterprises. Based on the latest version of Redis, this book provides both step-by-step recipes and relevant the background information required to utilize its features to the fullest. It covers everything from a basic understanding of Redis data types to advanced aspects of Redis high availability, clustering, administration, and troubleshooting. This book will be your great companion to master all aspects of Redis. The book starts off by installing and configuring Redis for you to get started with ease. Moving on, all the data types and features of Redis are introduced in detail. Next, you will learn how to develop applications with Redis in Java, Python, and the Spring Boot web framework. You will also learn replication tasks, which will help you to troubleshoot replication issues. Furthermore, you will learn the steps that need to be undertaken to ensure high availability on your cluster and during production deployment. Toward the end of the book, you will learn the topmost tasks that will help you to troubleshoot your ecosystem efficiently, along with extending Redis by using different modules. Style and approach This book is a rich collection of recipes that will come in handy when you are working with Redis. It addresses your common and not-so-common pain points, so this is a book of Redis that you must have on the shelf.

Discover best practices and troubleshooting solutions when working on ROS About This Book ? Develop complex robotic applications using ROS to interface robot manipulators and mobile robots ? Gain insight into autonomous navigation in mobile robots and motion planning in robot manipulators ? Discover best practices and troubleshooting solutions Who This Book Is For If you are a robotics enthusiast or researcher who want to learn more about building robot applications using ROS, this book is for you. In order to learn from this book, you should have a basic knowledge of ROS, GNU/Linux, and C++ programming concepts. The book is also excellent for programmers who want to explore the advanced features of ROS. What You Will Learn ? Create a robot model with a seven-DOF robotic arm and a differential wheeled mobile robot ? Work with Gazebo and V-REP robotic simulator ? Implement autonomous navigation in differential drive robots using SLAM and AMCL packages ? Explore the ROS Pluginlib, ROS nodelets, and Gazebo plugins ? Interface I/O boards such as Arduino, robot sensors, and high-end actuators ? Simulate and motion plan an ABB and universal arm using ROS Industrial ? Explore the latest version of the ROS framework ? Work with the motion planning of a seven-DOF arm using MoveIt! In Detail In this day and age, robotics has been gaining a lot of traction in various industries where consistency and perfection matter. Automation is achieved via robotic applications and various platforms that support robotics. The Robot Operating System (ROS) is a modular software platform to develop generic robotic applications. This book focuses on the most stable release of ROS (Kinetic Kame), discusses advanced concepts, and effectively teaches you programming using ROS. We begin with aninformative overview of the ROS framework, which will give you a clear idea of how ROS works. During the course of this book, you’ll learn to build models of complex robots, and simulate and interface the robot using the ROS MoveIt! motion planning library and ROS navigation stacks. Learn to leverage several ROS packages to embrace your robot models. After covering robot manipulation and navigation, you’ll get to grips with the interfacing I/O boards, sensors, and actuators of ROS. Vision sensors are a key component of robots, and an entire chapter is dedicated to the vision sensor and image elaboration, its interface in ROS and programming. You’ll also understand the hardware interface and simulation of complex robots to ROS and ROS Industrial. At the end of this book, you’ll discover the best practices to follow when programming using ROS. Style and approach This is a simplified guide to help you learn and master advanced topics in ROS using hands-on examples.

A highly detailed guide to performing powerful attack vectors in many hands-on scenarios and defending significant security flaws in your company's infrastructure About This Book ? Advanced exploitation techniques to breach modern operating systems and complex network devices ? Learn about Docker breakouts, Active Directory delegation, and CRON jobs ? Practical use cases to deliver an intelligent endpoint-protected system Who This Book Is For If you are a system administrator, SOC analyst, penetration tester, or a network engineer and want to take your penetration testing skills and security knowledge to the next level, then this book is for you. Some prior experience with penetration testing tools and knowledge of Linux and Windows command-line syntax is beneficial. What You Will Learn ? Exposure to advanced infrastructure penetration testing techniques and methodologies ? Gain hands-on experience of penetration testing in Linux system vulnerabilities and memory exploitation ? Understand what it takes to break into enterprise networks ? Learn to secure the configuration management environment and continuous delivery pipeline ? Gain an understanding of how to exploit networks and IoT devices ? Discover real-world, post-exploitation techniques and countermeasures In Detail It has always been difficult to gain hands-on experience and a comprehensive understanding of advanced penetration testing techniques and vulnerability assessment and management. This book will be your one-stop solution to compromising complex network devices and modern operating systems. This book provides you with advanced penetration testing techniques that will help you exploit databases, web and application servers, switches or routers, Docker, VLAN, VoIP, and VPN. With this book, you will explore exploitation abilities such as offensive PowerShell tools and techniques, CI servers, database exploitation, Active Directory delegation, kernel exploits, cron jobs, VLAN hopping, and Docker breakouts. Moving on, this book will not only walk you through managing vulnerabilities, but will also teach you how to ensure endpoint protection. Toward the end of this book, you will also discover post-exploitation tips, tools, and methodologies to help your organization build an intelligent security system. By the end of this book, you will have mastered the skills and methodologies needed to breach infrastructures and provide complete endpoint protection for your system. Style and approach Your one-stop guide to mastering the skills and methodologies of breaching infrastructures and providing complete endpoint protection to your system.

Discover new opportunities to empower your private cloud by making the most of the OpenStack universe About This Book ? This practical guide teaches you how to extend the core functionalities of OpenStack ? Discover OpenStack's flexibility by writing custom applications and network plugins ? Deploy a containerized environment in OpenStack through a hands-on and example-driven approach Who This Book Is For This book is for system administrators, cloud architects, and developers who have experience working with OpenStack and are ready to step up and extend its functionalities. A good knowledge of basic OpenStack components is required. In addition, familiarity with Linux boxes and a good understanding of network and virtualization jargon is required. What You Will Learn ? Explore new incubated projects in the OpenStack ecosystem and see how they work ? Architect your OpenStack private cloud with extended features of the latest versions ? Consolidate OpenStack authentication in your large infrastructure to avoid complexity ? Find out how to expand your computing power in OpenStack on a large scale ? Reduce your OpenStack storage cost management by taking advantage of external tools ? Provide easy, on-demand, cloud-ready applications to developers using OpenStack in no time ? Enter the big data world and find out how to launch elastic jobs easily in OpenStack ? Boost your extended OpenStack private cloud performance through real-world scenarios In Detail OpenStack is a very popular cloud computing platform that has enabled several organizations during the last few years to successfully implement their Infrastructure as a Service (IaaS) platforms. This book will guide you through new features of the latest OpenStack releases and how to bring them into production straightaway in an agile way. It starts by showing you how to expand your current OpenStack setup and how to approach your next OpenStack Data Center generation deployment. You will discover how to extend your storage and network capacity and also take advantage of containerization technology such as Docker and Kubernetes in OpenStack. Additionally, you'll explore the power of big data as a Service terminology implemented in OpenStack by integrating the Sahara project. This book will teach you how to build Hadoop clusters and launch jobs in a very simple way. Then you'll automate and deploy applications on top of OpenStack. You will discover how to write your own plugin in the Murano project. The final part of the book will go through best practices for security such as identity, access management, and authentication exposed by Keystone in OpenStack. By the end of this book, you will be ready to extend and customize your private cloud based on your requirements. Style and approach This guide is filled with practical scenarios on how to extend and enhance OpenStack's functionality. We will be covering various installation and configuration platforms along with a focus on plugins and extending OpenStack's core functionalities.

A practical guide filled with case studies and easy solutions to solve the most common user experience issues About This Book ? Understand and fix the pain points of a bad UX design to ensure greater customer satisfaction. ? Correct UX issues at various stages of a UX Design with the help of different methodologies for fixing bad UXs ? See best practices and established principles in UX with case studies illustrating these practices and principles Who This Book Is For This book is for anyone confronted with a poorly designed UX. It is ideal for UX professionals who want to solve problems with existing UX designs, and UX designers who want to enhance their designs or analyze and rectify where they went wrong. What You Will Learn ? Learn about ROI and metrics in UX ? Understand the importance of getting stakeholders involved ? Learn through real cases how to fix bad UX ? Identify and fix UX issues using different methodologies ? Learn how to turn insights and finding into practical UX solutions ? Learn to validate, test and measure the UX solutions implemented ? Learn about UX refactoring In Detail Have your web applications been experiencing more hits and less conversions? Are bad designs consuming your time and money? This book is the answer to these problems. With intuitive case studies, you’ll learn to simplify, fix, and enhance some common, real-world application designs. You’ll look at the common issues of simplicity, navigation, appearance, maintenance, and many more. The challenge that most UX designers face is to ensure that the UX is user-friendly. In this book, we address this with individual case studies starting with some common UX applications and then move on to complex applications. Each case study will help you understand the issues faced by a bad UX and teach you to break it down and fix these problems. As we progress, you’ll learn about the information architecture, usability testing, iteration, UX refactoring, and many other related features with the help of various case studies. You’ll also learn some interesting UX design tools with the projects covered in the book. By the end of the book, you’ll be armed with the knowledge to fix bad UX designs and to ensure great customer satisfaction for your applications. Style and approach This book takes a practical approach, with case studies, best practices, and practical solutions to bad design

Join the virtual reality revolution by creating immersive 3D games and applications with Cardboard VR, Gear VR, OculusVR, and HTC Vive About This Book ? Develop robust, immersive VR experiences that are easy on the eye. ? Code 3D games and applications using Unity 3D game engine. ? Learn the basic principles of virtual reality applications Who This Book Is For If you are a game developer and a VR enthusiast now looking to get stuck into the VR app development process by creating VR apps for different platforms, then this is the book for you. Familiarity with the Unity game engine and the C# language is key to getting the most from this book. What You Will Learn ? Use Unity assets to create object simulation. ? Implement simple touch controls in your application. ? Apply artificial intelligence to achieve player and character interaction. ? Add *s for movement, tracking, grasping, and spawning. ? Create animated walkthroughs, use 360-degree media, and build engaging VR experiences. ? Deploy your games on multiple VR platforms. In Detail Are you new to virtual reality? Do you want to create exciting interactive VR applications? There's no need to be daunted by the thought of creating interactive VR applications, it's much easier than you think with this hands-on, project-based guide that will take you through VR development essentials for desktop and mobile-based games and applications. Explore the three top platforms—Cardboard VR, Gear VR, and OculusVR —to design immersive experiences from scratch. You’ll start by understanding the science-fiction roots of virtual reality and then build your first VR experience using Cardboard VR. You'll then delve into user interactions in virtual space for the Google Cardboard then move on to creating a virtual gallery with Gear VR. Then you will learn all about virtual movements, state machines, and spawning while you shoot zombies in the Oculus Rift headset. Next, you'll construct a Carnival Midway, complete with two common games to entertain players. Along the way, you will explore the best practices for VR development, review game design tips, discuss methods for combating motion sickness and identify alternate uses for VR applications Style and approach A project-based guide with every project built across chapters.

How the German Oskar Schindler came to save more than one thousand Polish Jews during the Holocaust is one of the most fascinating stories of the century. Although millions are now learning about Schindler through Steven Spielberg's recent Academy AwardR-winning film, his achievement first gained prominence with Keneally's 1982 "facticious" novel (which is also the basis for the film). Keneally's account is less melodramatic than the motion picture, and although he does not fully explain how a hedonistic German could have been so altered by the plight of the Jewish workers in his factory, he does make Schindler less enigmatic than the big-screen version. Ben Kingsley, one of the film's stars, reads in a calculatedly matter-of-fact tone, letting the story's power alone convey its complicated emotions. Highly recommended. 　　Michael Adams, Fairleigh Dickinson Univ. Lib., Madison, N.J.

When deception leads to desire . . .When her stubborn sister runs off the night before her arranged marriage, Meg Lyntonhardly hesitates before donning the wedding veil and walking down the aisle herself. It's the only way to save her family from sure destitution. By the time her wealthy groom discovers he has married the wrong sister, it will be too late to annul their vows. And too late for Meg to escape her wifely duty to a man reputed to be a devil in battle and the bedroom . . .A bride is the last thing Nicholas Hartley, Duke of Temberlay, wants. Then he sees Meg and realizes that his wedding night will be a great pleasure indeed. But aside from the agreeable business of begetting an heir, Temberlay will never change his wicked ways for a wedding vow until he discovers Meg's deception, and decides to teach the scheming beauty how to be a proper duchess, kiss by devastating kiss . . .

As tall and striking as the Valkyries of legend, Dr. Rain Jordan is proud of her Norse ancestors despite their warlike ways. But she can't believe her eyes when a blow to her head transports her to a nightmarish battlefield of yore and there standing before her is the barbarian of her dreams.A wild-eyed berserker, Selik can slay a dozen Saxons with a single swing of his deadly sword yet he can't control a saucy wench from the future. In his eyes, Rain is a prisoner and he'd dearly love to avail himself of her medical skills not to mention her considerable knowledge of the male anatomy. But the infuriating woman has ideas of her own. If Selik isn't careful, the stunning siren might very well capture his savage heart and make a warrior of love out of . . . The Outlaw Viking

Sophocles' most profound and celebrated play in a vivid and dynamic new translation by award-winning poet Robert BaggOedipus the King remains, after 2,500 years, a shocking, suspenseful, and highly emotional drama in which a royal family is brought to hellish ruin by fate, an inscrutable god, and the kindness of a stranger. Oedipus must find and destroy the murderer of his predecessor, King Laios, to rid Thebes of the plague caused by the killer's undetected and malignant presence. The play's headlong action resembles a tautly woven criminal investigation, but one whose immense stakes pose a host of wrenching and still unresolved questions: What constitutes human guiltWhy do gods punish the innocentWhat are the limits of human intellectWhy do family bonds so often prove destructive?Robert Bagg's spare, idiomatic, and nuanced translation is ideally suited for reading, teaching, or performing. This is Sophocles for a new generation.

For those looking to go deeper with Rob Bell's bestselling pioneering book Love Wins, this companion offers: Insights and commentary by theologians, Bible scholars, scientists, and pastors Deep analysis of all relevant Bible passages on heaven, hell, and salvation Detailed chapter summaries, discussion questions, and Bible studies for individuals, groups, and classes Excerpts from works throughout Christian history illustrating the variety of teachers also debating the issues Bell wrestles with New material by Bell on his mission for the book and how people can take the next step

Brought together for the very first time, all 13 novels about Paddington, the beloved, classic bear from Darkest Peru! Paddington Bear had travelled all the way from Darkest Peru when the Brown family first met him on Paddington Station. Since then their lives have never been quite the same… for ordinary things become quite extraordinary when a bear called Paddington is around. From arriving at Paddington station and meeting the Brown family, to being mistaken for a famous athlete, with plenty of laugh-out-lad mishaps along the way, there is certainly never a dull moment in this fabulous story collection! Paddington Bear has been delighting adults and children alike with his earnest good intentions and humorous misadventures for over fifty years.

New York, 1899. Two strangers, one destiny.

In the sequel to his bestselling JFK in Ireland, the Emerald Isle’s favourite son delves into his country’s past to celebrate the Irish people who through their skills and endeavours helped make the British Isles great. In ‘The Irish Are Coming’ Ryan Tubridy takes a journey into Ireland’s past to unearth the many amazing, and altogether fascinating, contributions the Irish have made to everyday British life; whether it be making us laugh (Graham Norton), thrilling us with their acting (Peter O’Toole), or dazzling us with their audacious adventuring (Earnest Shackleton). Just as Stuart Maconie has celebrated in his own unique way all that is great about his North of England roots, so Ryan Tubridy makes a passionate case for the magnificent contribution Ireland has made to its nearest neighbour.

Earlier naturalists formed the impression that bird numbers remained more or less stable through time. In the years since these words were written, however, changes have occurred in the landscapes of the British Isles and in the seas around our coasts, causing bird populations to fluctuate in an unprecedented way. In Ian Newton’s latest New Naturalist volume, he explores bird populations and why their numbers vary in the way they do, from year to year or from place to place. He addresses the various factors that we know limit bird numbers – food supplies and other resources, competitors, predators, parasites and pathogens, and various human impacts. The combination of a rapidly expanding human population, a predominantly utilitarian attitude to land, central government policy on land use, and increasing mechanisation have combined to promote more massive changes in land use – and hence in bird habitats – in recent decades than at any comparable period previously. These developments have in turn brought huge changes in bird populations, as some species dependent on the old landscapes declined, and others benefiting from the changes increased. Over the same period, changing public attitudes to wildlife, protective legislation and a growing network of nature reserves allowed previously scarce bird species to recover from past onslaughts, while climate warming has promoted further changes. In this seminal new work, Ian Newton sets out to explain why different bird species are distributed in the numbers that they are, and have changed over the years in the way that they have. He emphasises the factors that influence bird numbers, rather than the numbers themselves, thus providing a much-needed overview which is necessary if we are to successfully manage bird populations, whether for conservation reasons, for sustainable hunting or for crop protection. The continued monitoring of bird numbers can also alert us to impending environmental problems. In addition, the regular watching and study of birds now provides a source of recreation and pleasure for very large numbers of people, who would find a world with fewer birds a poorer place.

With the lyricism of Ishiguro’s NEVER LET ME GO, and the world building brilliance of Atwood, Emmi It?ranta’s effortless and poignant debut novel is a coming of age story full of emotional drama and wonderment. Some secrets demand betrayal. 'You’re seventeen, and of age now, and therefore old enough to understand what I’m going to tell you,’ my father said. ‘This place doesn’t exist.’ ‘I’ll remember,’ I told him, but didn’t realise until later what kind of promise I had made. When Noria Kaitio reaches her seventeenth birthday, she is entrusted with the secret of a freshwater spring hidden deep within the caves near her small rural village. Its preservation has been the responsibility of her family for generations. Apprenticed to her father, one of the last true tea masters, when Noria takes possession of the knowledge, she become much more than the guardian of ancestral treasure; soon, she will hold the fate of everyone she loves in her hands.

A rollicking magical adventure story as King Midas sets out to find a cure for his magic touch so that he can turn his daughter back from gold. Witches, dragons, wizards and a host of amazing characters feature in this spell-binding tale from a supreme storyteller.

Download an EXCLUSIVE FREE extract of the terrifying new Psychological Thriller from Mark Edwards and Louise Voss. ‘I was gripped all the way.’ Peter James. He's posted on your wall. He's following you on Twitter. He knows where you are right now… When Amy receives an email from her older sister, Becky, announcing that she's off travelling and "don't try to find me", she is worried. Becky would never do such a thing on a whim. Amy – who is recovering from an abusive relationship that has left her terrified of love – soon finds that Becky had started using online dating sites. Aided by Becky's neighbour, Gary, Amy sets about tracking down the men her sister had dated, following a trail that leads her into the darkly seductive world of internet hook-ups. But Amy is unaware that a sadistic killer is watching – a killer who’s been using the internet to stalk, torture and kill. Now he’s got something very special planned for Amy and she is about to find out that romance really is dead.

Discover the true life story of favourite storyteller Michael Morpurgo, in this biography specially edited for children. Also features seven original Morpurgo stories. We are enchanted by Michael Morpurgo’s amazing stories like ‘Private Peaceful’, ‘Born to Run’ and ‘Kensuke’s Kingdom’. And with big screen adaptations of his novels such as ‘War Horse’ being made into film adaptations by Steven Spielberg, it’s no surprise that he’s our nation’s number one favourite storyteller. But what about the real life story of Michael Morpurgo…? How did a boy supremely uninterested in books, who dreamed of becoming an army officer, become a bestselling author and Children’s Laureate? What stories in Michael’s own life inspired him to write more than a hundred books for children? In a unique collaboration, Maggie Fergusson and Michael himself explore his life through biography and stories. This is a specially abridged edition of the critically acclaimed biography ‘War Child to War Horse’, for children. With additional photos not included in the hardback edition, and with a special activities section, this is the perfect gift for any child who has ever loved a Morpurgo story – and there are millions of them out there…

From bestselling author Simon Winchester, the extraordinary story of how America was united into a single nation. For more than two centuries, E pluribus unum – out of many, one – has been featured on America’s official government seals and stamped on its currency. But how did America become ‘one nation, indivisible’? In this monumental history, Simon Winchester addresses this question, introducing the fearless trailblazers whose achievements forged and unified America. Winchester follows in the footsteps of America’s most essential explorers, thinkers, and innovators. He treks vast swaths of territory, introducing these fascinating pioneers – some, such as Washington and Jefferson, Lewis and Clark being familiar, some forgotten, some hardly known – who played a pivotal role in creating today’s United States. Throughout, he ponders whether the historic work of uniting the States has succeeded, and to what degree. ‘The Men Who United the States’ is a fresh, lively, and erudite look at the way in which the most powerful nation on earth came together, from one of our most entertaining, probing, and insightful observers.