Generating anonymous routes is very freaking expensive because Rails has to try generating every possible route you have listed. Use either named routes or helper/model methods if you’ve got lots of links on a page and are worried about performance.

URLs are first sight of your app’s GUI — If every Rails developer said that to themselves, there wouldn’t be a deployed default routes.rb left on the Internet. A URL is not just an arbitrary string of characters which identifies a resource on the Internet. A URL does not merely identify, it also describes what comes behind it, both to end users and, critically, to search engine crawlers. Take a look at these two URL pairs:

* www.smarteguru.com/card/show/116
* www.smarteguru.com/category/show/16
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