We are always looking to speed up our apps by making Rails move faster. The folks over at Novemberain.com have provided a great tip for those of us using Edge Rails (the trunk version of Rails). They submitted patch #10835 which was committed to changeset 8674. From what I gather reading their post, their patch reduces the number of patterns that the routing engine has to look through by removing potential patterns that definitely do not contain your route. Definitely check their site for all the details.
