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Five Essentials For Your Ruby Toolbox : Page 3

These are the five must-have tools and libraries that any professional Ruby developer needs to have in his or her toolbox.

3. Instant Rails
Most Ruby developers who have Ruby on Rails Web application framework installed went through the lengthy process of installing RubyGems, installing the Rails gems, and then setting up their environments. It doesn't need to be such a complex procedure, however. Two tools enable you to install a Rails application on a new computer quickly.

For Windows users, a single application called Instant Rails enables them to install and run an Apache Web server, Ruby, the MySQL database engine, and the Rails framework all at once (see Figure 4).

Click to enlarge

Figure 4. Instant Rails Main Screen

Instant Rails gets a Rails application up and running with only a couple of clicks. This can be ideal if you need to deploy a Rails application to a client or on a remote machine where installing Ruby and Rails is not appropriate.

There are plans to port Instant Rails to Linux, BSD, and Mac OS X in the future, but currently Mac OS X users have an alternative called Locomotive. Like Instant Rails, Locomotive provides an all-in-one Rails deployment system within a single application.

4. Mongrel – A HTTP Server Library
Mongrel is an HTTP server tool and library for Ruby. On the surface, it doesn't sound particularly exciting, but its benefits are compelling. Ruby already comes with a HTTP server library known as WEBrick, but it's extremely slow. Mongrel's speed and reliability are head and shoulders above WEBrick and other alternatives, so installing it allows your Rails applications to run much faster. In fact, Mongrel is now used in the majority of Rails deployments, so it's a useful tool to learn. Additionally, you can use Mongrel directly from your Ruby code to develop your own HTTP server programs.

Installing Mongrel takes only a minute with RubyGems (using a mere gem install mongrel command). It has separate builds for Windows- and UNIX-related platforms due to the need to compile some external C code.

Of the five tools this article covers, Mongrel is the only library. As such, it serves as a great example of how to package, market, and document a library. Mongrel's popularity rests not just on its performance, but also on the way creator Zed Shaw has engaged the community and thoroughly documented the library. If you view Mongrel's source code, you'll find almost as many comments as lines of code.

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