Real projects are big and often have several megabytes of code. Sometimes, you need to quickly apply a ‘hotfix’ for a critical bug. Usually, a fix like that is small enough (containing only several lines of code) and affects only a part of the application. If so. it’s not necessary to restart the whole application – you need to restart only part of the running processes. In the end, you don’t need to go through the entire deployment process.
check this out http://blog.railsware.com/2011/10/25/delivery-via-patch/
check this out http://blog.railsware.com/2011/10/25/delivery-via-patch/
