“Tina Seskis’ twisted psychological thriller keeps readers guessing at Emily’s secrets until the end.” —Us WeeklyAn apparently happy marriage. A beautiful family. A dream home. So what makes lawyer Emily Coleman—a woman who appears to have everything—get up one morning and walk right out of her life to start again as someone new?Deliberately losing herself in London, Emily quickly transforms herself into Cat. Along with her new name, she finds a new home in a shared house in North London teeming with an odd assortment of flatmates, and a new job as a receptionist.Soon Cat has buried any trace of her old self so well, no one knows how to find her. But she can’t bury the past—or her own painful memories. As the days turn to months, thoughts of all she’s left behind begin to consume her. She cannot outrun the ghosts that haunt her, no matter how hard she tries to elude them. And soon, she’ll have to face the truth of what she’s done—a shocking revelation that may push her one step too far. . . .“[A] diverting read.” —Publishers Weekly

From New York Times bestselling author T.C. Boyle, a powerful, gripping novel that explores the roots of violence and anti-authoritarianism inherent In the American character Set in contemporary Northern California, The Harder They Come explores the volatile connections between three damaged people—an aging ex-Marine and Vietnam veteran, his psychologically unstable son, and the son's paranoid, much-older lover—as they careen toward an explosive confrontation.On a cruise to Central America, seventy-year-old Sten Stensen unflinchingly kills an armed robber menacing a busload of tourists. The reluctant hero is relieved to return home to Fort Bragg, California—only to find that his delusional son, Adam, has spiraled out of control.Adam has become involved with Sara, a hardened member of a right-wing anarchist group that refuses to acknowledge the laws of the state. Adam's senior by some fifteen years, she becomes his protector and inamorata. As Adam's mental state fractures, he becomes increasingly delusional until a schizophrenic breakdown leads him to shoot two people. On the run, he takes to the woods, spurring the biggest manhunt in California history. As T.C. Boyle explores a father's legacy of violence and his powerlessness in relating to his equally violent son, he offers unparalleled insights into the American psyche. Inspired by a true story, The Harder They Come is a devastating and indelible novel from a modern master.

Sylvia Plath's shocking, realistic, and intensely emotional novel about a woman falling into the grip of insanityEsther Greenwood is brilliant, beautiful, enormously talented, and successful, but slowly going under—maybe for the last time. In her acclaimed and enduring masterwork, Sylvia Plath brilliantly draws the reader into Esther's breakdown with such intensity that her insanity becomes palpably real, even rational—as accessible an experience as going to the movies. A deep penetration into the darkest and most harrowing corners of the human psyche, The Bell Jar is an extraordinary accomplishment and a haunting American classic.

From the #1 New York Times bestselling author of the Princess Diaries series comes the very first adult installment, which follows Princess Mia and her prince charming as they plan their fairy-tale wedding—though a few poisoned apples could turn this happily-ever-after into a royal nightmareFor Princess Mia, the past five years since college graduation have been a whirlwind of activity: living in New York City, running her new teen community center, being madly in love, and attending royal engagements. And speaking of engagements. Mia's gorgeous longtime boyfriend, Michael, managed to clear both their schedules just long enough for an exotic (and very private) Caribbean island interlude where he popped the question! Of course, Mia didn't need to consult her diary to know that her answer was a royal oui.But now Mia has a scandal of majestic proportions to contend with: her grandmother has leaked "fake" wedding plans to the press that could cause even normally calm Michael to become a runaway groom. Worse, a scheming politico is trying to force Mia's father from the throne, all because of a royal secret that could leave Genovia without a monarch. Can Mia prove to everyone—especially herself—that she's not only ready to wed, but ready to rule as well?

Trying to help a woman in distress, World War I nurse and accidental sleuth Bess Crawford learns that no good deed goes unpunishedWhen battlefield nurse Bess Crawford returns from France for a well-earned Christmas leave, she finds a bruised and shivering woman huddled in the doorway of her London residence. The woman has nowhere to turn, and propelled by a firm sense of duty, Bess takes her in. Once inside Bess’s flat, the woman reveals that a quarrel with her husband erupted into violence, yet she wants to return home—if Bess will go with her to Sussex. Realizing that the woman is suffering from a concussion, Bess gives up a few precious days of leave to travel with her. But she soon discovers that this is a good deed with unforeseeable consequences.What Bess finds at Vixen Hill is a house of mourning. The woman’s family has gathered for a memorial service for the elder son, who died of war wounds. Her husband, home on compassionate leave, is tense, tormented by jealousy and his own guilty conscience. Then, when a troubled houseguest is found dead, Bess herself becomes a prime suspect in the case. This murder will lead her to a dangerous quest in war-torn France, an unexpected ally, and a startling revelation that puts her in jeopardy before a vicious killer can be exposed.

Shortlisted for the Commonwealth Prize A Kirkus Best Book of the YearPlagued by guilt, paralyzed by shame, Jinx has spent the years since her mother's death alone, estranged from her husband, withdrawn from her son, and entrenched in a childhood home filled with fierce and violent memories. When Lemon, an old family friend, appears unbidden at the door, he seduces Jinx with a heady mix of powerful storytelling and tender care. What follows is a tense and passionate weekend, as the two join forces to unravel the tragedy that binds them. Jinx has long carried the burden of the past; now, she must relive her mother's last days, confront her grief head-on, and speak the truth as only she knows it.Expertly woven and perfectly paced, A Cupboard Full of Coats is both a heartbreaking family drama and a riveting mystery, with a cast of characters who linger in the mind and the heart long after the last page has been turned.

When the Bergamots move from a comfortable upstate college town to New York City, they’re not quite sure how they’ll adapt—or what to make of the strange new world of well-to-do Manhattan. Soon, though, Richard is consumed by his executive role at a large New York university, and Liz, who has traded in her academic career to oversee the lives of their children, is hectically ferrying young Coco around town.Fifteen-year-old Jake is gratefully taken into the fold by a group of friends at Wildwood, an elite private school.But the upper-class cocoon in which they have enveloped themselves is ripped apart when Jake wakes up one morning after an unchaperoned party and finds an email in his in-box from an eighth-grade admirer. Attached is a sexually explicit video she has made for him. Shocked, stunned, maybe a little proud, and scared—a jumble of adolescent emotion—he forwards the video to a friend, who then forwards it to a friend. Within hours, it’s gone viral, all over the school, the city, the world.The ensuing scandal threatens to shatter the Bergamots’ sense of security and identity, and, ultimately, their happiness. They are a good family faced with bad choices, and how they choose to react, individually and at one another’s behest, places everything they hold dear in jeopardy.This Beautiful Life is a devastating exploration of the blurring boundaries of privacy and the fragility of self, a clear-eyed portrait of modern life that will have readers debating their assumptions about family, morality, and the sacrifices and choices we make in the name of love.

Ten years ago, fifteen-year-old Scarlett Rainsford vanished while on a family holiday in Greece. Was she abducted, or did she run awayLou Smith worked the case as a police constable, and failing to find Scarlett has been one of the biggest regrets of her career. No one is more shocked than Lou to learn that Scarlett has unexpectedly been found during a Special Branch raid of a brothel in Briarstone.Lou and her Major Crimes team are already stretched working two troubling cases: nineteen-year-old Ian Palmer was found badly beaten; soon after, bar owner Carl McVey was found half-buried in the woods, his Rolex and money gone. While Lou tries to establish the links between the two cases, DS Sam Hollands works with Special Branch to question Scarlett. What happened to herWhere has she been until nowAnd why is her family—with the exception of her emotionally fragile younger sister, Juliette—less than enthusiastic about her return?When another brutal assault and homicide are linked to the McVey murder, Lou's cases collide, and the clues all point in one terrifying direction. As the pressure and the danger mount, it becomes clear that the silent, secretive Scarlett holds the key to everything.

Based on the terrible truths of Jonestown, Jim Jones's utopian commune in Guyana, Children of Paradise is a beautifully imagined novel that interweaves history and fiction to portray a mother and daughter's escape from the rule of a religious madman.Joyce and her young daughter, Trina, have followed a charismatic preacher from California to the wilds of Guyana, where a thousand congregants have cleared a swath of dense jungle and built a utopian society based on a rigid order guarded over by armed men and teenage "prefects." Each day ends with sermons that demonstrate the preacher's capricious violence and his utmost hostility toward even a whisper of skepticism. But try as the preacher may to block out the world, the commune's seclusion is being breached, first by tribal elders complaining of polluted river water downstream, then by an invisible presence that has helped a young boy to disappear, and finally with rumors of the imminent arrival of a congressional delegation on a fact-finding mission.As the camp begins rehearsing an endgame of mass suicide, Joyce and Trina attempt a daring escape, aided by a local boat captain and the most unlikely of prisoners—the extraordinary Adam, the commune's caged gorilla.Told with a sweeping perspective in lush prose, shimmering with magic, and devastating in its clarity, Children of Paradise is a brilliant and evocative exploration of the liberating power of storytelling.

From the bestselling, Man Booker–short-listed author of The Sisters Brothers comes a brilliant and boisterous novel that reimagines the folk taleA love story, an adventure story, a fable without a moral, and an ink-black comedy of manners, Undermajordomo Minor is Patrick deWitt's long-awaited follow-up to the internationally bestselling and critically acclaimed novel The Sisters Brothers.Lucien (Lucy) Minor is the resident odd duck in the bucolic hamlet of Bury. Friendless and loveless, young and aimless, Lucy is a compulsive liar, a sickly weakling in a town famous for producing brutish giants. Then Lucy accepts employment assisting the Majordomo of the remote, foreboding Castle Von Aux.While tending to his new post as Undermajordomo, Lucy soon discovers the place harbors many dark secrets, not least of which being the whereabouts of the castle's master, Baron Von Aux. He also encounters the colorful people of the local village—thieves, madmen, aristocrats, and Klara, a delicate beauty for whose love he must compete with the exceptionally handsome soldier Adolphus. Thus begins a tale of polite theft, bitter heartbreak, domestic mystery, and cold-blooded murder in which every aspect of humanity is laid bare for our hero to observe.Undermajordomo Minor is an adventure, a mystery, and a searing portrayal of rural Alpine bad behavior, but above all it is a love story—and Lucy must be careful, for love is a violent thing.

A raw and tenderly funny look at the human-cat relationship, from one of our most treasured, iconic writersFelines touched a vulnerable spot in the unfathomable soul of Charles Bukowski, the Dirty Old Man of American letters. For the writer, there was something majestic and elemental about these inscrutable creatures, whose searing gaze could penetrate deep into our beings. Bukowski considered cats to be unique forces of nature, elusive emissaries of beauty and love.On Cats offers Bukowski's musings on these beloved animals and their toughness and resiliency. He honors them as fighters, hunters, survivors who command awe and respect as they grip tightly onto the world around them: "A cat is only ITSELF, representative of the strong forces of life that won't let go."Funny and moving, Bukowski's On Cats brings together the acclaimed writer's reflections on these animals he so admired. Bukowski's cats are fierce and demanding—he captures them stalking their prey; crawling across his typewritten pages; waking him up with claws across the face. But they are also affectionate and giving, sources of inspiration and gentle, insistent care.Poignant yet free of treacle, On Cats is an illuminating portrait of this one-of-a-kind artist and his unique view of the world, witnessed through his relationship with the animals he considered among his most profound teachers.

Forget chocolate, exotic lingerie, or marriage counselors -- the only props you'll ever need, whether you are in love or out of it, are the poems in this book. There are verses here to console you when the phone doesn't ring or the divorce papers have been signed, and poems that celebrate the joy of being in love, from the first kiss to walking down the aisle (for the second time). These essential poems, which include never-before-anthologized works, will tell you the truth about love.

Khaliah Ali, daughter of Muhammad Ali, shares her success at overcoming obesity through banding surgery—a minimally invasive, reversible, and extremely effective choice for drastically overweight peopleWhen Muhammad Ali's daughter Khaliah hit 325 pounds, she didn't need to be told again that she was morbidly obese. A lifetime of dieting, of starving, had not helped. Miserable, depressed, and unable to walk up a flight of stairs without losing her breath, she did not know which way to turn—until a friend pointed her toward a new type of surgery called gastric banding. It is just as effective as gastric bypass but with a fraction of potential complications. With the band placed around her stomach and completely taking away her hunger, Khaliah slimmed down to half her former size. Khaliah wraps her story of weight loss in this memoir of what it was like to grow up the daughter of one of the world's most famous men, and teams up with her surgeons at the New York University Medical Center to detail the lifetime of misery suffered by an obese girl; the ins and outs of the banding operation; and the joy, serenity, and health resulting from a solution that until now had eluded her.

Meet Tom Ripple, a man with an uncommon outlook on his common life. Through the vividness of his voice and his growing sense of the sorrow and absurdity of the world, Tom Ripple becomes an unusually appealing antihero, aware of his ordinariness and the limits of his intelligence, with a ribald sense of humor, and a clumsiness in his attempts at emotional connection with others. He is a bewildered everyman navigating his way through modern times. By turns poignant, funny, heartbreaking, and profound, It's All Right Now is a towering achievement and a singular work of the imagination.

Learn to code like a professional with Python – an open source, versatile, and powerful programming language About This Book Learn the fundamentals of programming with Python – one of the best languages ever created Develop a strong set of programming skills that you will be able to express in any situation, on every platform, thanks to Python’s portability Create outstanding applications of all kind, from websites to *ing, and from GUIs to data science Who This Book Is For Python is the most popular introductory teaching language in U.S. top computer science universities, so if you are new to software development, or maybe you have little experience, and would like to start off on the right foot, then this language and this book are what you need. Its amazing design and portability will help you become productive regardless of the environment you choose to work with. What You Will Learn Get Python up and running on Windows, Mac, and Linux in no time Grasp the fundamental concepts of coding, along with the basics of data structures and control flow. Write elegant, reusable, and efficient code in any situation Understand when to use the functional or the object oriented programming approach Create bulletproof, reliable software by writing tests to support your code Explore examples of GUIs, *ing, data science and web applications Learn to be independent, capable of fetching any resource you need, as well as dig deeper In Detail Learning Python has a dynamic and varied nature. It reads easily and lays a good foundation for those who are interested in digging deeper. It has a practical and example-oriented approach through which both the introductory and the advanced topics are explained. Starting with the fundamentals of programming and Python, it ends by exploring very different topics, like GUIs, web apps and data science. The book takes you all the way to creating a fully fledged application. The book begins by exploring the essentials of programming, data structures and teaches you how to manipulate them. It then moves on to controlling the flow of a program and writing reusable and error proof code. You will then explore different programming paradigms that will allow you to find the best approach to any situation, and also learn how to perform performance optimization as well as effective debugging. Throughout, the book steers you through the various types of applications, and it concludes with a complete mini website built upon all the concepts that you learned. Style and approach This book is an easy-to-follow guide that will take you from a novice to the proficient level at a comfortable pace, using a lot of simple but effective examples. Each topic is explained thoroughly, and pointers are left for the more inquisitive readers to dig deeper and expand their knowledge.

Learn how to run new and old Windows applications in Docker containers. About This Book ? Package traditional .NET Frameworks apps and new .NET Core apps as Docker images, and run them in containers for increased efficiency, portability, and security ? Design and implement distributed applications that run across connected containers, using enterprise-grade open source software from public Docker images ? Build a full Continuous Deployment pipeline for a .NET Framework application, and deploy it to a highly-available Docker swarm running in the cloud Who This Book Is For If you want to modernize an old monolithic application without rewriting it, smooth the deployment to production, or move to DevOps or the cloud, then Docker is the enabler for you. This book gives you a solid grounding in Docker so you can confidently approach all of these scenarios. What You Will Learn ? Comprehend key Docker concepts: images, containers, registries, and swarms ? Run Docker on Windows 10, Windows Server 2016, and in the cloud ? Deploy and monitor distributed solutions across multiple Docker containers ? Run containers with high availability and fail-over with Docker Swarm ? Master security in-depth with the Docker platform, making your apps more secure ? Build a Continuous Deployment pipeline by running Jenkins in Docker ? Debug applications running in Docker containers using Visual Studio ? Plan the adoption of Docker in your own organization In Detail Docker is a platform for running server applications in lightweight units called containers. You can run Docker on Windows Server 2016 and Windows 10, and run your existing apps in containers to get significant improvements in efficiency, security, and portability. This book teaches you all you need to know about Docker on Windows, from 101 to deploying highly-available workloads in production. This book takes you on a Docker journey, starting with the key concepts and simple examples of how to run .NET Framework and .NET Core apps in Windows Docker containers. Then it moves on to more complex examples—using Docker to modernize the architecture and development of traditional ASP.NET and SQL Server apps. The examples show you how to break up monoliths into distributed apps and deploy them to a clustered environment in the cloud, using the exact same artifacts you use to run them locally. To help you move confidently to production, it then explains Docker security, and the management and support options. The book finishes with guidance on getting started with Docker in your own projects, together with some real-world case studies for Docker implementations, from small-scale on-premises apps to very large-scale apps running on Azure. Style and approach Using a step-by-step approach, this book shows you how to use Docker on Windows. It includes practical examples and real-world technical and business scenarios that will help you effectively implement Docker in your environment.There are over 50 examples of Dockerized applications, using C# .NET projects as the source and packaging them into Docker images.

If you're a Python developer or a system administrator with Python experience and you're looking to take your first steps in network programming, then this book is for you. Basic knowledge of Python is assumed.

Get to grips with building the foundations of an RPG using Unreal Engine 4About This BookUtilize a mixture of C++, Blueprints, and UMG to create a role playing game (RPG) efficientlyCreate reusable code chunks and elements that can easily be integrated into other gamesA cost effective, step-by-step guide to building and customizing an entire framework for your RPGWho This Book Is ForIf you are new to Unreal Engine and always wanted to * an RPG, you are this book’s target reader. The lessons assume you understand the conventions of RPG games and have some awareness of the basics of using the Unreal editor to build level.What You Will LearnProgram gameplay elements in C++ in UnrealCreate custom game data for entities such as players and enemiesCreate a turn-based combat engineDesign menu systems and blueprint logicCreate an NPC and dialog systemIntegrate equipment and itemsDevelop the foundations of a saving and loading systemIn DetailNow that Unreal Engine 4 has become one of the most cutting edge game engines in the world, developers are looking for the best ways of creating games of any genre in the engine. This book will lay out the foundation of creating a turn-based RPG in Unreal Engine 4.The book starts by walking you through creating a turn-based battle system that can hold commands for party members and enemies. You’ll get your hands dirty by creating NPCs such as shop owners, and important mechanics, that make up every RPG such as a currency system, inventory, dialogue, and character statistics. Although this book specifically focuses on the creation of a turn-based RPG, there are a variety of topics that can be utilized when creating many other types of genres.By the end of the book, you will be able to build upon core RPG framework elements to create your own game experience.Style and approachYou will follow a series of lessons detailing the elements that contribute to an RPG. By the end of the book, you will have considerably leveled up your ability to make your own game

Learn, develop, and design applications using the new features in Microsoft Dynamics CRM About This Book ? Implement business logic using processes, plugins, and client-side *s with MS Dynamics 365 ? Develop custom CRM solutions to improve your business applications ? A comprehensive guide that covers the new features of Microsoft Dynamics 365 and increasingly advanced topics. Who This Book Is For This book targets skilled developers who are looking to build business-solution software and are new to application development in Microsoft Dynamics 365, especially for CRM. What You Will Learn ? Discover new designers tools included in Dynamics 365 CRM ? Develop apps using the platform-agnostic Web API ? Leverage Azure Extensions to design cloud-aware applications ? Learn how to implement CRUD operation ? Create integrated real-world apps using Microsoft PowerApps and Flow by combining services such as Twitter, Facebook, and SharePoint ? Configure and use Artificial Intelligence Azure Cognitive Services for Recommendation and Text Analytic services In Detail Microsoft Dynamics 365 CRM is the most trusted name in enterprise-level customer relationship management. Thelatest version of Dynamics CRM comes with the important addition of exciting features guaranteed to make your life easier. It comes straight off the shelf with a whole new frontier of updated business rules, process enhancements, SDK methods, and other enhancements. This book will introduce you to the components of the new designer tools, such as SiteMap, App Module, and Visual Designer for Business Processes. Going deeper, this book teaches you how to develop custom SaaS applications leveraging the features of PowerApps available in Dynamics 365.Further, you will learn how to automate business processes using Microsoft Flow, and then we explore Web API, the most important platform update in Dynamics 365 CRM. Here, you'll also learn how to implement Web API in custom applications. You will learn how to write an Azure-aware plugin to design and integrate cloud-aware solutions. The book concludes with configuring services using newly released features such as Editable grids, Data Export Service, LinkedIn Integration, Relationship Insights, and Live Assist. Style and approach The book takes a pragmatic approach, exploring Dynamics 365 and its CRM features with the help of real-world scenarios.

Discover Android programming and web development by understanding the concepts of Kotlin Programming About This Book ? Practical solutions to your common programming problems with Kotlin 1.1 ? Leverage the functional power of Kotlin to ease your Android application development ? Learn to use Java code in conjunction with Kotlin Who This Book Is For This book will appeal to Kotlin developers keen to find solutions for their common programming problems. Java programming knowledge would be an added advantage. What You Will Learn ? Understand the basics and object-oriented concepts of Kotlin Programming ? Explore the full potential of collection frameworks in Kotlin ? Work with SQLite databases in Android, make network calls, and fetch data over a network ? Use Kotlin's Anko library for efficient and quick Android development ? Uncover some of the best features of Kotlin: Lambdas and Delegates ? Set up web service development environments, write servlets, and build RESTful services with Kotlin ? Learn how to write unit tests, integration tests, and instrumentation/acceptance tests. In Detail The Android team has announced first-class support for Kotlin 1.1. This acts as an added boost to the language and more and more developers are now looking at Kotlin for their application development. This recipe-based book will be your guide to learning the Kotlin programming language. The recipes in this book build from simple language concepts to more complex applications of the language. After the fundamentals of the language, you will learn how to apply the object-oriented programming features of Kotlin 1.1. Programming with Lambdas will show you how to use the functional power of Kotlin. This book has recipes that will get you started with Android programming with Kotlin 1.1, providing quick solutions to common problems encountered during Android app development. You will also be taken through recipes that will teach you microservice and concurrent programming with Kotlin. Going forward, you will learn to test and secure your applications with Kotlin. Finally, this book supplies recipes that will help you migrate your Java code to Kotlin and will help ensure that it's interoperable with Java. Style and approach This book explains concepts related to Kotlin Programming using a practical approach and with the help of easy-to-follow recipes.

Highly available microservice-based web apps for Cloud with Java About This Book ? Take advantage of the simplicity of Spring to build a full-fledged application ? Let your applications run faster while generating smaller cloud service bills ? Integrate your application with various tools such as Docker and ElasticSearch and use specific tools in Azure and AWS Who This Book Is For Java developers who want to build secure, resilient, robust and scalable applications that are targeted for cloud based deployment, will find this book helpful. Some knowledge of Java, Spring, web programming and public cloud providers (AWS, Azure) should be sufficient to get you through the book. What You Will Learn ? See the benefits of the cloud environment when it comes to variability, provisioning, and tooling support ? Understand the architecture patterns and considerations when developing on the cloud ? Find out how to perform cloud-native techniques/patterns for request routing, RESTful service creation, Event Sourcing, and more ? Create Docker containers for microservices and set up continuous integration using Jenkins ? Monitor and troubleshoot an application deployed in the cloud environment ? Explore tools such as Docker and Kubernetes for containerization and the ELK stack for log aggregation and visualization ? Use AWS and Azure specific tools to design, develop, deploy, and manage applications ? Migrate from monolithic architectures to a cloud native deployment In Detail Businesses today are evolving so rapidly that they are resorting to the elasticity of the cloud to provide a platform to build and deploy their highly scalable applications. This means developers now are faced with the challenge of building build applications that are native to the cloud. For this, they need to be aware of the environment, tools, and resources they’re coding against. If you’re a Java developer who wants to build secure, resilient, robust, and scalable applications that are targeted for cloud-based deployment, this is the book for you. It will be your one stop guide to building cloud-native applications in Java Spring that are hosted in On-prem or cloud providers - AWS and Azure The book begins by explaining the driving factors for cloud adoption and shows you how cloud deployment is different from regular application deployment on a standard data centre. You will learn about design patterns specific to applications running in the cloud and find out how you can build a microservice in Java Spring using REST APIs You will then take a deep dive into the lifecycle of building, testing, and deploying applications with maximum automation to reduce the deployment cycle time. Gradually, you will move on to configuring the AWS and Azure platforms and working with their APIs to deploy your application. Finally, you’ll take a look at API design concerns and their best practices. You’ll also learn how to migrate an existing monolithic application into distributed cloud native applications. By the end, you will understand how to build and monitor a scalable, resilient, and robust cloud native application that is always available and fault tolerant. Style and approach Filled with examples, this book will build you an entire cloud-native application through its course and will stop at each point and explain in depth the functioning and design considerations that will make a robust, highly available application