Rails Quick loading of changed files

I am working on a ruby on rails application and I want to reduce the time it takes to “load” the application after changes are made to a couple of files. What I mean by that is after I make a few changes, in ruby on rails all the class files get reloaded on the local machine during the next request. This adds an additional 20 seconds-1 minute to the time taken by the next request. How can I go about reducing the amount of time it takes for the next request that will hit the application. I want to bring the time it takes to less than a second . This issue only happens in the local machine when config.cache_classes = false