Lambda enables users to develop code that executes in response to events - API calls, file uploads, schedules, etc - and upload it without worrying about managing traditional server metrics such as disk space, memory, or CPU usage. With its "per execution" cost model, Lambda can enable organizations to save hundreds or thousands of dollars on computing costs. With in-depth walkthroughs, large screenshots, and complete code samples, the reader is guided through the step-by-step process of creating new functions, responding to infrastructure events, developing API backends, executing code at specified intervals, and much more. Introduction to AWS Computing Evolution of the Computing Workload Lambda Background The Internals The Basics Functions Languages Resource Allocation Getting Set Up Hello World Uploading the Function Working with Events AWS Events Custom Events The Context Object Properties Methods Roles and Permissions Policies Trust Relationships Console Popups Cross Account Access Dependencies and Resources Node Modules OS Dependencies OS Resources OS Commands Logging Searching Logs Testing Your Function Lambda Console Tests Third-Party Testing Libraries Simulating Context Hello S3 Object The Bucket The Role The Code The Event The Trigger Testing When Lambda Isn’t the Answer Host Access Fine-Tuned Configuration Security Long-Running Tasks Where Lambda Excels AWS Event-Driven Tasks Scheduled Events (Cron) Offloading Heavy Processing API Endpoints Infrequently Used Services Real-World Use Cases S3 Image Processing Shutting Down Untagged Instances Triggering CodeDeploy with New S3 Uploads Processing Inbound Email Enforcing Security Policies Detecting Expiring Certificates Utilizing the AWS API Execution Environment The Code Pipeline Cold vs. Hot Execution What is Saved in Memory Scaling and Container Reuse From Development to Deployment Application Design Development Patterns Testing Deployment Monitoring Versioning and Aliasing Costs Short Executions Long-Running Processes High-Memory Applications Free Tier Calculating Pricing CloudFormation Reusable Template with Minimum Permissions Cross Account Access CloudWatch Alerts AWS API Gateway API Gateway Event Creating the Lambda Function Creating a New API, Resource, and Method Initial Configuration Mapping Templates Adding a Query String Using HTTP Request Information Within Lambda Deploying the API Additional Use Cases Lambda Competitors Iron.io StackHut WebTask.io Existing Cloud Providers The Future of Lambda More Resources Conclusion

    An immediate and comprehensive answer source, rather than a diffuse tutorial, for serious programmers who want to see difficult material covered in depth without the fluff. Discusses XML, dynamic HTML, JavaScript, Java, and Perl CGI programming to create a full Web site programming package. Written by the author of several successful titles published by The Coriolis Group.

    We'll cover resources, messages, cookies, and authentication protocols. We'll look at how HTTP clients can use persistent and parallel connections to improve performance,and see how the web scales to meet demand using cache headers andproxy servers. By the end of the book you will have the knowledge tobuild better web applications and web services.

    First, let me tell you a little secret about SEO marketing...Most search engine optimization advice on the Internet is wrong!If you've sifted through search engine optimization advice online, you may have noticed two things: - Most published SEO advice is either outdated or just dead-wrong.- Google's constant updates have made many popular SEO optimization strategies useless.Why is this so? Google's constantly evolving. Recent changes: 1. August, 2018 - Google releases an industry changing update, with some sites showing up to 50% decreases or increases in traffic, later titled the "Medic Update" or "Your Money or Your Life Update."2. July, 2018 - Google announce's Speakable markup, making it easier to target voice search results.3. March, 2018 - Google's game-changing "Mobile First Index" is rolled out, completely overhauling how search results are calculated.SEO 2019 is now updated covering new changes to Google's algorithm, walks you through major updates and how to use them to your advantage. This book also reveals industry secrets to stay ahead of Google's algorithm, and potential Google changes coming up in 2019. With this best-selling SEO book, learn SEO from a fundamental level, achieve top rankings, and generate a wave of new customers to your site.Discover powerful link building techniques experts use to get top rankings and generate massive trafficLink building is the strongest factor for ranking high in Google. Unfortunately, most widely-used methods suck! This chapter walks you through new and powerful techniques that won't get you in hot-water with Google. Now expanded with more link building strategies and extra tips for advanced readers.You will also discover: 1. Important SEO concepts, from beginner to advanced.2. Sneaky tricks to get local businesses ranking high with local SEO.3. The inner workings of Google's algorithm and how it calculates the search results.4. How to find "money" keywords that will send customers to your site.5. Basic and advanced link building strategies for pushing your rankings up higher.6. Six insider sources to get expert SEO or Internet marketing advice worth thousands of dollars, for free.7. How to use social media and web analytics to multiply your results.8. 25+ powerful tools top Internet marketing experts use to automate search engine optimization, saving weeks of time and creating bigger results.Sidestep the 2019 Google updatesContrary to Internet marketing gossip, problems caused by Google updates are rarely irrecoverable-but you need the right knowledge. This book reveals: - Inner mechanics of Google's algorithm, and how to rank your site at the top.- Recent Google updates-Mobile First Index, Google Speed update, Google Hawk update, Google FRED update, and more...- Potential updates coming up in 2019.- Steps to recover from Google penalties.And read the special bonus chapter on pay-per-click advertisingIn this bonus, learn to quickly setup pay-per-click advertising campaigns with Google AdWords and send customers to your site overnight, literally.One of the most comprehensive SEO optimization books ever published-updated and expanded-of all best-selling SEO books, this is the only one with everything you need.Scroll up, click buy, and get started now!

    The Web is awash in Ruby code that is now virtually impossible to change or extend. This text helps you solve that problem by using powerful real-world object-oriented design techniques, which it thoroughly explains using simple and practical Ruby examples. Sandi Metz has distilled a lifetime of conversations and presentations about object-oriented design into a set of Ruby-focused practices for crafting manageable, extensible, and pleasing code. She shows you how to build new applications that can survive success and repair existing applications that have become impossible to change. Each technique is illustrated with extended examples, all downloadable from the companion Web site, poodr.info. The first title to focus squarely on object-oriented Ruby application design, Practical Object-Oriented Design in Ruby will guide you to superior outcomes, whatever your previous Ruby experience. Novice Ruby programmers will find specific rules to live by; intermediate Ruby programmers will find valuable principles they can flexibly interpret and apply; and advanced Ruby programmers will find a common language they can use to lead development and guide their colleagues. This guide will help you Understand how object-oriented programming can help you craft Ruby code that is easier to maintain and upgrade Decide what belongs in a single Ruby class Avoid entangling objects that should be kept separate Define flexible interfaces among objects Reduce programming overhead costs with duck typing Successfully apply inheritance Build objects via composition Design cost-effective tests Solve common problems associated with poorly designed Ruby code

    James Wallace brings readers up to date on the Gates saga to 1997 and reveals the inside story of the struggle to keep Microsoft on top in the World Wide Web game.

     Test-Driven JavaScript Development is a complete, best-practice guide to agile JavaScript testing and quality assurance with the test-driven development (TDD) methodology. Leading agile JavaScript developer Christian Johansen covers all aspects of applying state-of-the-art automated testing in JavaScript environments, walking readers through the entire development lifecycle, from project launch to application deployment, and beyond.Using real-life examples driven by unit tests, Johansen shows how to use TDD to gain greater confidence in your code base, so you can fearlessly refactor and build more robust, maintainable, and reliable JavaScript code at lower cost. Throughout, he addresses crucial issues ranging from code design to performance optimization, offering realistic solutions for developers, QA specialists, and testers.Coverage includes - Understanding automated testing and TDD - Building effective automated testing workflows - Testing code for both browsers and servers (using Node.js) - Using TDD to build cleaner APIs, better modularized code, and more robust software - Writing testable code - Using test stubs and mocks to test units in isolation - Continuously improving code through refactoring - Walking through the construction and automated testing of fully functional softwareThe accompanying Web site, tddjs.com, contains all of the book's code listings and additional resources.

    Uses progressive enhancement techniques to ensure graceful degradation (which makes sites usable in all browsers). Shows readers how to write their own Ajax scripts instead of relying on third-party libraries. Web site designers love the idea of Ajax--of creating Web pages in which information can be updated without refreshing the entire page. But for those who aren't hard-core programmers, enhancing pages using Ajax can be a challenge. Even more of a challenge is making sure those pages work for all users. In Bulletproof Ajax, author Jeremy Keith demonstrates how developers comfortable with CSS and (X)HTML can build Ajax functionality without frameworks, using the ideas of graceful degradation and progressive enhancement to ensure that the pages work for all users. Throughout this step-by-step guide, his emphasis is on best practices with an approach to building Ajax pages called Hijax, which improves flexibility and avoids worst-case scenarios.

    Proceed step-by-step through five progressively more complex web applications: from a "Hello World" app all the way to a robust Newspaper app with a custom user model, complete user authentication flow, foreign key relationships, and more. Learn current best practices around class-based views, templates, urls, user authentication, testing, and deployment. The material is up-to-date with the latest versions of both Django (2.0) and Python (3.6). TABLE OF CONTENTS: * Introduction * Chapter 1: Initial Setup * Chapter 2: Hello World app * Chapter 3: Pages app * Chapter 4: Message Board app * Chapter 5: Blog app * Chapter 6: Forms * Chapter 7: User Accounts * Chapter 8: Custom User Model * Chapter 9: User Authentication * Chapter 10: Bootstrap * Chapter 11: Password Change and Reset * Chapter 12: Email * Chapter 13: Newspaper app * Chapter 14: Permissions and Authorizations * Chapter 15: Comments * Conclusion

    We talk about the history, trends, technology ecosystem and future of Connected Cities, Connected Homes, Connected Health and Connected Cars. We also discuss the most exciting growth areas for entrepreneurs and venture capital investors. We share exciting stories and unique opinions of more than 30 industry veterans, experts and visionaries from Google, Ericsson, AT&T, Qualcomm, SAP, MIT, Jawbone and many others. We called this book The Silent Intelligence because most of the activity and growth in the space so far has been outside of mainstream visibility. Our aim is to help executives, entrepreneurs, investors and everybody who is interested in this topic, better understand the opportunities and challenges of the Internet of Things. We also hope that the new growth opportunities discussed in this book will be as exciting to you as they are to us.

    We start off easy, defining some of the tech lingo you may have heard before, but didn’t fully understand. From there, each lesson introduces something new, slowly building up to the point where you are confident about what an API is and, for the brave, could actually take a stab at using one.

    An electrician by trade, Frank’s experience of sailing amounted to not very much – an unpleasant spell on a Scottish fishing trawler as a young man and a brief holiday on someone else’s yacht off the coast of Mozambique a couple of years before. Never one to be daunted by a challenge or to be resisted in any way, he took his nine year old twins, Robert and Nicky, out of school, persuaded his wife Maureen that they would all learn how to sail and cope with life on the open seas as they went, and prepared to follow his dream of circumnavigating the world. Facing real danger from the elements and at first having to live more by their wits than their skills, the Stilwell family set off boldly, determined to become part of a community of sailors and adventurers who spend more time on the ocean than they do on dry land. Thinking Up a Hurricane is the unique coming of age memoir of Martinique Stilwell’s recounting of her true life gypsy childhood. It is poignant and funny and heartbreaking all at the same time. With the wisdom and innocence of a child’s point of view, it is a powerful yet tender story of physical and emotional adversity, of family dysfunction and the ties that bind, and of the shackles and exhilarating freedom of growing up different.

    I loved the tutorial-style game-like program development. This book rekindled my earliest joys of programming. Plus, JavaScript!" —Brendan Eich, creator of JavaScriptJavaScript is the language of the Web, and it's at the heart of every modern website from the lowliest personal blog to the mighty Google Apps. Though it's simple for beginners to pick up and play with, JavaScript is not a toy—it's a flexible and complex language, capable of much more than the showy tricks most programmers use it for.Eloquent JavaScript goes beyond the cut-and-paste scripts of the recipe books and teaches you to write code that's elegant and effective. You'll start with the basics of programming, and learn to use variables, control structures, functions, and data structures. Then you'll dive into the real JavaScript artistry: higher-order functions, closures, and object-oriented programming.Along the way you'll learn to:Master basic programming techniques and best practices Harness the power of functional and object-oriented programming Use regular expressions to quickly parse and manipulate strings Gracefully deal with errors and browser incompatibilities Handle browser events and alter the DOM structure Most importantly, Eloquent JavaScript will teach you to express yourself in code with precision and beauty. After all, great programming is an art, not a science—so why settle for a killer app when you can create a masterpiece?

    Perhaps the oddest quirk of Britain's railway network is also one of its least well known: around 150 of the nation's stations are request stops. Take an unassuming station like Shippea Hill in Cambridgeshire - the scene of a fatal accident involving thousands of carrots. Or Talsarnau in Wales, which experienced a tsunami. Tiny Stations is the story of the author's journey from the far west of Cornwall to the far north of Scotland, visiting around 40 of the most interesting of these little used and ill-regarded stations. Often a pen-stroke away from closure - kept alive by political expediency, labyrinthine bureaucracy or sheer whimsy - these half-abandoned stops afford a fascinating glimpse of a Britain that has all but disappeared from view. There are stations built to serve once thriving industries - copper mines, smelting works, cotton mills, and china clay quarries where the first trains were pulled by horses; stations erected for the sole convenience of stately home and castle owners through whose land the new iron road cut an unwelcome swathe; stations created for Victorian day-tripping attractions; a station built for a cavalry barracks whose last horse has long since bolted; and many more. Dixe Wills will leave you in no doubt that there's more to tiny stations than you might think.

    Offering a gentle learning curve, PHP is an accessible yet powerful language for creating dynamic web pages. As its popularity has grown, PHP's basic feature set has become increasingly more sophisticated. Now PHP 5 boasts advanced features--such as new object-oriented capabilities and support for XML and Web Services--that will please even the most experienced web professionals while still remaining user-friendly enough for those with a lower tolerance for technical jargon.If you've wanted to try your hand at PHP but haven't known where to start, then Learning PHP 5 is the book you need. If you've wanted to try your hand at PHP but haven't known where to start, then Learning PHP 5 is the book you need. With attention to both PHP 4 and the new PHP version 5, it provides everything from a explanation of how PHP works with your web server and web browser to the ins and outs of working with databases and HTML forms. Written by the co-author of the popular PHP Cookbook, this book is for intelligent (but not necessarily highly-technical) readers. Learning PHP 5 guides you through every aspect of the language you'll need to master for professional web programming results. This book provides a hands-on learning experience complete with exercises to make sure the lessons stick.Learning PHP 5 covers the following topics, and more:How PHP works with your web browser and web server PHP language basics, including data, variables, logic and looping Working with arrays and functions Making web forms Working with databases like MySQL Remembering users with sessions Parsing and generating XML DebuggingWritten by David Sklar, coauthor of the PHP Cookbook and an instructor in PHP, this book offers the ideal classroom learning experience whether you're in a classroom or on your own. From learning how to install PHP to designing database-backed web applications, Learning PHP 5 will guide you through every aspect of the language you'll need to master to achieve professional web programming results.