This book demystifies agile methodologies: why they’re designed the way they are, what problems they address, and the values, principles, and ideas they embody.Learning Agile helps you recognize the principles that apply to development problems specific to your team, company, and projects. You’ll discover how to use that information to guide your choice of methodologies and practices.With this book you’ll learn:Values that effective software teams possessThe methodologies that embody those valuesThe practices that make up those methodologiesAnd principles that help you bring those values, methodologies, and practices to your team and your company

    The Mikado Method is a process for surfacing the dependencies in a codebase, so that you can systematically eliminate technical debt and get things done.It gets its name from a simple game commonly known as "pick-up sticks." You start with a jumbled pile of sticks. The goal is to remove the Mikado, or Emperor, stick without disturbing the others. Players carefully remove sticks one at a time, leaving the rest of the heap intact, slowly exposing the Mikado. The game is a great metaphor for eliminating technical debt—carefully extracting each intertwined dependency until you're able to successfully resolve the central issue and move on.The Mikado Method is a book by the creators of this process. It describes a pragmatic, straightforward, and empirical method to plan and perform non-trivial technical improvements on an existing software system. The method has simple rules, but the applicability is vast. As you read, you'll practice a step-by-step system for identifying the scope and nature of your technical debt, mapping the key dependencies, and determining the safest way to approach the "Mikado"-your goal. A natural byproduct of this process is the Mikado Graph, a minimalistic, relevant, just-in-time roadmap and information radiator that reflects deep understanding of how your system works.

    I could not wait to find out what happened next." - Vint Cerf, Internet pioneer "The threat to the Internet from worms, viruses, botnets, and zombie computers is real, and growing. Counting from Zero is a great way to come up to speed on the alarming state of affairs, and Johnston draws you in with his story and believable cast of characters." - Phil Zimmermann, creator of Pretty Good Privacy (PGP) the most widely used email encryption program Today, every computer connected to the Internet is under constant attack from viruses, worms, port scans, and spam. Security professionals continually fight to contain newly unleashed cyber attacks, known as 'zero day' attacks, only to have new attacks launched. Millions of computers have already succumbed, and, without their owner's knowledge, have become slave computers - remotely controlled 'zombies'. Under the control of organized crime and backed by foreign governments, these computers are morphing into collections known in the industry as botnets, short for robot networks. Internet security expert Mick O'Malley is the only one who recognizes the growing threat of the ultimate zero day attack on the Internet from a massive botnet, and his unique hacker skills and network of colleagues enable him to fight back. More cyber prep than cyber punk, Mick uses real-life tools and techniques to encrypt all his communications, and uses these skills to break the encryption used by the botnet. Mick uses encryption on a personal level, too, having multiple passports and multiple names and identities. While crisscrossing the globe in the air, on land, and at sea investigating the threat, Mick becomes the target of attacks on his reputation, his identity, and ultimately his life. Along the way, Mick meets Kateryna Petrescu, a beautiful Romanian firewall expert. Mick's attraction to Kateryna develops as they work closely together and share the excitement and danger. Why is the government following Mick and trying to intercept his communications? Can he stop the zero day attack before it is unleashed? What will be the cost to Mick for his single mindedness? Unfolding across three continents, the new techno thriller "Counting from Zero" gives a realistic insider's view of the thrust and parry world of computer security and cryptography, and the very real threat of botnets.

    Editors are the subject of adoration and worship, or of scorn and ridicule, depending upon whether the topic of discussion is your editor or someone else's.vi has been the standard editor for close to 30 years. Popular on Unix and Linux, it has a growing following on Windows systems, too. Most experienced system administrators cite vi as their tool of choice. And since 1986, this book has been the guide for vi. However, Unix systems are not what they were 30 years ago, and neither is this book. While retaining all the valuable features of previous editions, the 7th edition of Learning the vi and vim Editors has been expanded to include detailed information on vim, the leading vi clone. vim is the default version of vi on most Linux systems and on Mac OS X, and is available for many other operating systems too. With this guide, you learn text editing basics and advanced tools for both editors, such as multi-window editing, how to write both interactive macros and scripts to extend the editor, and power tools for programmers -- all in the easy-to-follow style that has made this book a classic.Learning the vi and vim Editors includes:A complete introduction to text editing with vi:How to move around vi in a hurry Beyond the basics, such as using buffers vi's global search and replacement Advanced editing, including customizing vi and executing Unix commandsHow to make full use of vim: Extended text objects and more powerful regular expressions Multi-window editing and powerful vim scripts How to make full use of the GUI version of vim, called gvim vim's enhancements for programmers, such as syntax highlighting, folding and extended tags Coverage of three other popular vi clones -- nvi, elvis, and vile -- is also included. You'll find several valuable appendixes, including an alphabetical quick reference to both vi and ex mode commands for regular vi and for vim, plus an updated appendix on vi and the Internet. Learning either vi or vim is required knowledge if you use Linux or Unix, and in either case, reading this book is essential. After reading this book, the choice of editor will be obvious for you too.

    Most are born this way, although some may develop later over the course of a lifetime. Being an Empath means that you are able to deeply feel other’s experiences and emotions and often times you have a hard time separating your energy from someone else’s.Being an unprotected Empath may lead to a variety of damaging and difficult feelings. You may find that these feelings can affect you physically and emotionally and this is why it is very important to learn techniques to harness and nurture your gift.In this complete guide, we will go over everything you need to know to thrive in life as an Empath, and also as a highly sensitive. Including: Understanding empaths and Empathy Traits of an Empath Self-tests for Empaths Living life as an Empath Empath related problems and how to overcome them How to deal with negative entities Techniques to clear negative energy from your surroundings How to learn and control Empath abilities Chakra development for Empaths Emotional management techniques for Empaths This is a lifelong guide for any sensitive person who’s been told to “stop being so sensitive”. So what are you waiting for? Grab your copy and start learning how you can nurture your precious gift and thrive in this world!

    Fueled by significant benefits and an impressive portfolio of real-world applications already in production, Rails is destined to continue making significant inroads in coming years.Each new Rails application showing up on the web adds yet more to the collective wisdom of the Rails development community. Yesterday's best practices yield to today's latest and greatest techniques, as the state of the art is continually refined in kitchens all across the Internet. Indeed, these are times of great progress.At the same time, it's easy to get left behind in the wake of progress. Advanced Rails Recipes keeps you on the cutting edge of Rails development and, more importantly, continues to turn this fast-paced framework to your advantage.Advanced Rails Recipes is filled with pragmatic recipes you'll use on every Rails project. And by taking the code in these recipes and slipping it into your application you'll not only deliver your application quicker, you'll do so with the confidence that it's done right.The book includes contributions from Aaron Batalion, Adam Keys, Adam Wiggins, Andre Lewis, Andrew Kappen, Benjamin Curtis, Ben Smith, Chris Bernard, Chris Haupt, Chris Wanstrath, Cody Fauser, Dan Benjamin, Dan Manges, Daniel Fischer, David Bock, David Chelimsky, David Heinemeier Hansson, Erik Hatcher, Ezra Zygmuntowicz, Geoffrey Grosenbach, Giles Bowkett, Greg Hansen, Gregg Pollack, Hemant Kumar, Hugh Bien, Jamie Orchard-Hays, Jamis Buck, Jared Haworth, Jarkko Laine, Jason LaPier, Jay Fields, John Dewey, Jonathan Dahl, Josep Blanquer, Josh Stephenson, Josh Susser, Kevin Clark, Luke Francl, Mark Bates, Marty Haught, Matthew Bass, Michael Slater, Mike Clark, Mike Hagedorn, Mike Mangino, Mike Naberezny, Mike Subelsky, Nathaniel Talbott, PJ Hyett, Patrick Reagan, Peter Marklund, Pierre-Alexandre Meyer, Rick Olson, Ryan Bates, Scott Barron, Tony Primerano, Val Aleksenko, and Warren Konkel.

    Web-based companies live or die by the ability to scale their infrastructure to accommodate increasing demand. This book is a hands-on and practical guide to planning for such growth, with many techniques and considerations to help you plan, deploy, and manage web application infrastructure.The Art of Capacity Planning is written by the manager of data operations for the world-famous photo-sharing site Flickr.com, now owned by Yahoo! John Allspaw combines personal anecdotes from many phases of Flickr's growth with insights from his colleagues in many other industries to give you solid guidelines for measuring your growth, predicting trends, and making cost-effective preparations. Topics include:Evaluating tools for measurement and deployment Capacity analysis and prediction for storage, database, and application servers Designing architectures to easily add and measure capacity Handling sudden spikes Predicting exponential and explosive growth How cloud services such as EC2 can fit into a capacity strategy In this book, Allspaw draws on years of valuable experience, starting from the days when Flickr was relatively small and had to deal with the typical growth pains and cost/performance trade-offs of a typical company with a Web presence. The advice he offers in The Art of Capacity Planning will not only help you prepare for explosive growth, it will save you tons of grief.

    As more and more businesses seek to tame the massive unbounded data sets that pervade our world, streaming systems have finally reached a level of maturity sufficient for mainstream adoption. With this practical guide, data engineers, data scientists, and developers will learn how to work with streaming data in a conceptual and platform-agnostic way.Expanded from Tyler Akidau's popular blog posts Streaming 101 and Streaming 102, this book takes you from an introductory level to a nuanced understanding of the what, where, when, and how of processing real-time data streams. You'll also dive deep into watermarks and exactly-once processing with co-authors Slava Chernyak and Reuven Lax.You'll explore:How streaming and batch data processing patterns compareThe core principles and concepts behind robust out-of-order data processingHow watermarks track progress and completeness in infinite datasetsHow exactly-once data processing techniques ensure correctnessHow the concepts of streams and tables form the foundations of both batch and streaming data processingThe practical motivations behind a powerful persistent state mechanism, driven by a real-world exampleHow time-varying relations provide a link between stream processing and the world of SQL and relational algebra

    Plenty of books describe what agile development is or why it helps software projects succeed, but very few combine information for developers, managers, testers, and customers into a single package that they can apply directly. This book provides no-nonsense advice on agile planning, development, delivery, and management taken from the authors' many years of experience with Extreme Programming (XP). You get a gestalt view of the agile development process, including comprehensive guidance for non-technical readers and hands-on technical practices for developers and testers. The Art of Agile Development gives you clear answers to questions such as:How can we adopt agile development? Do we really need to pair program? What metrics should we report? What if I can't get my customer to participate? How much documentation should we write? When do we design and architect? As a non-developer, how should I work with my agile team? Where is my product roadmap? How does QA fit in? The book teaches you how to adopt XP practices, describes each practice in detail, then discusses principles that will allow you to modify XP and create your own agile method. In particular, this book tackles the difficult aspects of agile development: the need for cooperation and trust among team members. Whether you're currently part of an agile team, working with an agile team, or interested in agile development, this book provides the practical tips you need to start practicing agile development. As your experience grows, the book will grow with you, providing exercises and information that will teach you first to understand the rules of agile development, break them, and ultimately abandon rules altogether as you master the art of agile development. "Jim Shore and Shane Warden expertly explain the practices and benefits of Extreme Programming. They offer advice from their real-world experiences in leading teams. They answer questions about the practices and show contraindications - ways that a practice may be mis-applied. They offer alternatives you can try if there are impediments to applying a practice, such as the lack of an on-site customer. --Ken Pugh, Author of Jolt Award Winner, Prefactoring "I will leave a copy of this book with every team I visit." --Brian Marick, Exampler Consulting

    An acceptance rate of two percent. A dream internship for the winning team. ValleyStart is the most prestigious high school tech incubator competition in the country. Lucy Katz, Maddie Li, and Delia Meyer have secured their spots. And they've come to win.Meet the Screen Queens.Lucy Katz was born and raised in Palo Alto, so tech, well, it runs in her blood. A social butterfly and CEO in-the-making, Lucy is ready to win and party.East Coast designer, Maddie Li left her home and small business behind for a summer at ValleyStart. Maddie thinks she's only there to bolster her graphic design portfolio, not to make friends.Delia Meyer taught herself how to code on a hand-me-down computer in her tiny Midwestern town. Now, it's time for the big leagues--ValleyStart--but super shy Delia isn't sure if she can hack it (pun intended).When the competition kicks off, Lucy, Maddie, and Delia realize just how challenging the next five weeks will be. As if there wasn't enough pressure already, the girls learn that they would be the only all-female team to win ever. Add in one first love, a two-faced mentor, and an ex-boyfriend turned nemesis and things get...complicated.Filled with humor, heart, and a whole lot of girl power, Screen Queens is perfect for fans of Morgan Matson, Jenny Han, and The Bold Type.

    This book is a short, quickly-readable summary and introduction to the fundamentals of DDD; it does not introduce any new concepts; it attempts to concisely summarize the essence of what DDD is, drawing mostly Eric Evans' original book, as well other sources since published such as Jimmy Nilsson's Applying Domain Driven Design, and various DDD discussion forums. The main topics covered in the book include: Building Domain Knowledge, The Ubiquitous Language, Model Driven Design, Refactoring Toward Deeper Insight, and Preserving Model Integrity. Also included is an interview with Eric Evans on Domain Driven Design today.

    As the size and complexity of commercial software have grown, the gap between academic computer science and industry has widened. It's an open secret that there is little engineering in software engineering, which continues to rely not on codified scientific knowledge but on intuition and experience.Barr, who worked as a programmer for more than twenty years, describes how the industry has evolved, from the era of mainframes and Fortran to today's embrace of the cloud. He explains bugs and why software has so many of them, and why today's interconnected computers offer fertile ground for viruses and worms. The difference between good and bad software can be a single line of code, and Barr includes code to illustrate the consequences of seemingly inconsequential choices by programmers. Looking to the future, Barr writes that the best prospect for improving software engineering is the move to the cloud. When software is a service and not a product, companies will have more incentive to make it good rather than "good enough to ship."

    A quick and clean assassin. But he's burned out and ready to quit.Trained by a government agency with no name, Layne Parrish can snap a neck with one hand. But tea parties and cartoons with his three-year-old daughter is where his priorities are. After retiring to the mountains of Colorado for a simpler life, Layne thought that perilous world was behind him.He was wrong--dead wrong.When his former boss begs for his expertise, Layne knows he has one mission:  Eliminate an assassin to save a life. It's a job he can't refuse. This particular assassin is a ghost from his past--a murky past he wants destroyed.  But when Layne picks up his pistol for the last time, will his plan backfire?

    With the value of their martial skills on the decline, the samurai sought new spiritual, moral, psychological, and physical moorings. Tsunetomo Yamamoto, author of the now-classic Hagakure, combined a Confucian sense of justice with a Zen-influenced abandonment of the ego to espouse loyalty and death as paramount qualities of the samurai's calling.Kaibara Ekiken (16301714), a samurai physician with philosophical and Buddhist leanings, took the opposite approach. He sought ways for a healthier, more rewarding life. In his Yojokun: Life Lessons from a Samurai, he collected six decades of study and observation to compile one of the most remarkable commentaries of his age. Ekiken's sweep was vast. In Yojokun, he combined his knowledge of holistic health, the principles of chi (the material force that pervades all things) and jin (human heartedness), Buddhism, Confucianism, and the art of living. He addressed concerns that ran from mental and physical health to spiritual matters. His discourses examined the intake of food and drink, sexual practices, sustaining stamina and health in old age, overindulgence and restraint, bathing and healthy habits, and more. And throughout his discussion he wove a subtle but potent spiritual and philosophical thread. Yojokun offers startlingly profound and fresh insights into many of the same problems that concern us today. Translator William Scott Wilson notes Ekikens relevance for the 21st century: The Yojokun, then, is not just a vestige of quaint Orientalia, but rather a living guide to a traditional Way of life and balanced health. If we do not immediately understand some of its more exotic prescripts, it may be wiser not to dismiss them outright, but to approach the work as Ekiken himself might have: with humility, curiosity, respect, and imagination.

    and a shameful Dark Angels secret from the Horus Heresy soon leads to a new front in the war!