It is a well established performance best practice for a web page to minimize the number of HTTP requests it makes for assets like images, javascript files and stylesheets. In fact, its Rule #1 on Steve Souders High Performance Web Sites . In the latest version of Rails, these practices are being formalized for javascript and css with the asset pipeline , using the sprockets and sass libraries to combine multiple smaller files into a single unified (and minified) asset file in production mode.

Link:
RubySource: Introducing the Sprite-Factory Gem

Tags: gems
Senior Software Engineer at liquidplanner.com, building the best online project management application during the day, and experimenting with HTML5 games by night!

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