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Rails just keeps on changing. Rails 3 and Ruby 1.9 bring hundreds of improvements, including new APIs and substantial performance enhancements. The fourth edition of this award-winning classic has been reorganized and refocused so it's more useful than ever before for developers new to Ruby and Rails. Rails 3 is a major release--the changes aren't just incremental, but structural. So we decided to follow suit. This book isn't just a mild reworking of the previous edition to make it run with the new Rails. Instead, it's a complete refactoring.

Ready to learn Rails? Get up to speed using the framework’s latest release. This Live Edition has been updated to cover Rails 2.3.5, making it an ideal guide for Rails beginners. Unlike most Rails books, Learning Rails is for web developers, and not for programmers. You’ll start from the foundations of the Web you already know, and learn how to create something visible with Rails before reaching the more difficult database models and controller code.

Rails Test Prescriptions is a comprehensive guide to testing Rails applications, covering Test-Driven Development from both a theoretical perspective (why to test) and from a practical perspective (how to test effectively). It covers the core Rails testing tools and procedures for Rails 2 and Rails 3, and introduces popular add-ons, including Cucumber, Shoulda, Machinist, Mocha, and Rcov.

We all know feedback is good. Why not get it instantly? Continuous Testing with Ruby shows you how to use a combination of tests, tools, and techniques to immediately detect problems in code. This book will help you create a personalized development environment that instantly validates your decisions as you make changes to your code. This rapid feedback allows you to focus on the problem at hand, rather than constantly re-checking prior work. If you want to spend more of your time writing valuable software, and less time slogging through code line-by-line in a debugger, Continuous Testing with Ruby can help you!

Ready to transport your web applications into the Web 2.0 era? Head First Rails takes your programming -- and productivity -- to the max. You'll learn everything from the fundamentals of Rails scaffolding to building customized interactive web apps using Rails' rich set of tools and the MVC framework. Head First Rails uses a visually rich format designed to take advantage of the way your brain really works.

Programming Cocoa with Ruby brings together two enthusiastic development communities. Ruby programmers will tell you how productive they are with just the right amount of code. Cocoa developers know the importance of a clean, intuitive interface. Now, through Programming Cocoa with Ruby, the joy of Cocoa meets the joy of Ruby.

Security on Rails provides you with the tools and techniques to defend your Rails applications against attackers. Do you have a well-developed plan to test your application from a security perspective? Do you need more sophisticated access control? With Security on Rails, you can conquer the bad guys who are trying to exploit your application. You'll see the very techniques that hackers use, and then journey through this full-fledged guide for writing secure Rails applications.

Bestselling author David Flanagan teams up with Ruby creator Yukihiro "Matz" Matsumoto and writer/cartoonist/programmer why the lucky stiff to bring you the authoritative guide to Ruby. Covering versions 1.9 and 1.8, this book helps you learn Ruby's lexical structure, primary expressions, conditionals, syntax, classes, the data it manipulates, and more. For experienced programmers who want to look at this language in depth, this guide is invaluable.

Ruby Best Practices is for programmers who want to use Ruby the way Rubyists do. Written by the developer of the Ruby project Prawn (prawn.majesticseacreature.com), this concise book explains how to design beautiful APIs and domain-specific languages, work with functional programming ideas and techniques that can simplify your code and make you more productive, write code that's readable and expressive, and much more. It's the perfect companion to The Ruby Programming Language.

With this hands-on guide, you'll learn how Apache Cassandra handles hundreds of terabytes of data while remaining highly available across multiple data centers -- capabilities that have attracted Facebook, Twitter, and other data-intensive companies. Cassandra: The Definitive Guide provides the technical details and practical examples you need to assess this database management system and put it to work in a production environment.

High Performance MySQL is the definitive guide to building fast, reliable systems with MySQL. Written by noted experts with years of real-world experience building very large systems, this book covers every aspect of MySQL performance in detail, and focuses on robustness, security, and data integrity. Learn advanced techniques in depth so you can bring out MySQL's full power. The second edition is completely revised and greatly expanded, with deeper coverage in all areas.

As a Ruby programmer, you already know how much fun it is. Now see how to unleash its power, digging under the surface and exploring the language's most advanced features: a collection of techniques and tricks known as metaprogramming. Once the domain of expert Rubyists, metaprogramming is now accessible to programmers of all levels--from beginner to expert. Metaprogramming Ruby explains metaprogramming concepts in a down-to-earth style and arms you with a practical toolbox that will help you write great Ruby code.

Apache Hadoop is ideal for organizations with a growing need to store and process massive application datasets. With Hadoop: The Definitive Guide, programmers will find details for analyzing large datasets with Hadoop, and administrators will learn how to set up and run Hadoop clusters. The book includes case studies that illustrate how Hadoop is used to solve specific problems.

REST continues to gain momentum as the best method for building web services, leaving many web architects to consider whether and how to include this approach in their SOA and SOAP-dominated world. In this insightful book, three SOA experts provide a down-to-earth explanation of REST and demonstrate how you can develop simple and elegant distributed hypermedia systems by applying the Web's guiding principles to common enterprise computing problems. You'll learn techniques for implementing specific Web technologies and patterns to solve the needs of a typical company as it grows from modest beginnings to become a global enterprise.

You don't have to know everything about a car to drive one, and you don't need to know everything about Ruby to start programming with it. Written for both experienced and new programmers alike, Learning Ruby is a just-get-in-and-drive book -- a hands-on tutorial that offers lots of Ruby programs and lets you know how and why they work, just enough to get you rolling down the road.

Get the high-quality reference documentation you need to create effective database-driven websites with the popular Rails framework. This handy book provides a concise yet thorough introduction to the framework, an overview of commands and configurations, and details on every Rails component -- all in an easy-to-use reference you can rely on every day.

Three of CouchDB's creators show you how to use this document-oriented database as a standalone application framework or with high-volume, distributed applications. With its simple model for storing, processing, and accessing data, CouchDB is ideal for web applications that handle huge amounts of loosely structured data. You'll learn how to work with CouchDB through its RESTful web interface, and become familiar with key features such as simple document CRUD (create, read, update, delete), advanced MapReduce, deployment tuning, and more.