When your Ruby On Rails Website gets famous you're going to wish you implemented proper caching. Are you worried? Maybe just a little?This tutorial is going to show everything you need to know to use Caching in your Rails applications, so when you get digg'd or slashdot'd you won't be left begging your hosting provider for more CPU processing power.

The impending release of Ruby on Rails version 3 both refines and expands the capabilities of the popular Web application framework. Offering cleaner controllers and savvier SQL queries, you can expect to write less code than before. Better yet, you can include most of the components of Rails 3 in any Ruby application. Here's a look at what's changed for the better.

IronRuby is Microsoft's implementation of Ruby on the .NET framework. This article introduces IronRuby, and covers running Rails applications in IronRuby as well as potential issues to look out for

Ruby on Rails provides an excellent platform for building Web applications. Discover how to use the built-in Asynchronous JavaScript™ + XML (Ajax) features of the platform to give your application the Web 2.0 rich user interface experience.
If you haven't heard about Rails, then welcome back from your trip to planet Zorton, which is the only place you could go and not hear about Ruby on Rails over this past year. Rails is at its most appealing when it allows you to get your application and its features up and running quickly. Rails' built-in integration with the Prototype.js library for Ajax makes it easy to build so-called rich Internet applications quickly.
This article takes you through the steps of building a Rails application. It then dives right into using the Ajax features to build the JavaScript code that reads and writes data from the server.

The Ruby programming language was released to the public in 1995 and gained widespread adoption in 2006. A multipurpose language that focuses on simplicity and productivity, it combines the best features of many compiled and interpreted languages, such as easy development of large programs, rapid prototyping, almost-real-time development, and compact code. Ruby is a reflective, dynamic, and interpreted object-oriented scripting language, and JRuby is a Java programming language implementation of the Ruby language syntax, core libraries, and standard libraries. With JRuby, you get all of the advantages of Ruby plus interoperability with Java platform applications (Java applications) and access to the full range of Java platform functionality. JRuby and the Java platform are a compelling combination that you can apply to any programming situation. For example, from a JRuby script, you can call the Java platform Math library to access its powerful computational capabilities or call the Java platform Swing library to display a dialog box that requires end-user input before allowing the script to proceed. Also, you can use the JSR 223 Scripting APIs or the Bean Scripting Framework (BSF) APIs to call a JRuby script from within a Java application to, for example, invoke back-end processing scripts from a servlet to update or generate web content. This introductory article gets you started using JRuby and the Java platform. It shows you how to set up JRuby, explains the basics of using JRuby scripts with Java applications and the NetBeans integrated development environment (NetBeans IDE), and provides links to help you learn more. Also, the Getting Started section briefly introduces RubyGems and Ruby on Rails.

Web applications often analyze data in the database by generating reports. Charts provide a visual representation of the reports, can be used for understanding trends and generally facilitate better synthesis of data. Ruby On Rails is one of the technologies that can be used to create these web applications with reports and charts. In this article, we will discuss how to create charts in Ruby on Rails.

Behavior-driven development (BDD) is similar to test-driven development (TDD), but the tests for BDD are written in an easier-to-understand language so that developers and clients alike can clearly understand what is being tested. This article presents two tools for BDD with ruby: RSpec and Cucumber.

With the growing popularity of Web 2.0, a new data interchange format called JavaScript Object Notation (JSON) is emerging as a useful way to represent data in the business logic running on browsers. Learn how PHP-based server programs can convert XML-formatted enterprise application data into JSON format before sending it to browser applications.

One of the most distinctive aspects of the Rails platform is the Ruby language itself. As a dynamically typed language, Ruby has great flexibility, convenience, and power, but at a cost. Dynamically typed languages do not have a compiler that can catch certain kinds of errors, including relatively common type errors and some misspellings. Very early on, users of dynamically typed object-oriented languages learned that they had to test. Without testing, Ruby applications would have a much higher incidence of error per line of code than they do. With testing, you can have the benefits of dynamically typed languages with much less of the downside. In this article, I won't bore you with basic decisions, like whether you should test at all, or how you can convince your managers that the testing effort is worthwhile. I'll assume you already test. Instead, I'll break down some of the more subtle testing decisions that every Ruby project lead must eventually make. I'll talk about how you can measure your testing coverage, and how much testing you should do. I'll walk you through the basic out-of-the-box testing techniques, and how those compare with the newer mocking frameworks. Rather than providing an exhaustive tutorial, I'll give you a few examples of the techniques we used to build ChangingThePresent.org (see Resources) so you'll have a basic flavor of the techniques in play. Then I'll break through the strengths and weaknesses of the various techniques as we see them.

This article introduces RGen, a modelling framework inspired by openArchitectureWare. RGen uses internal DSLs for defining metamodels and offers a full modelling stack for Ruby.