fastup | index load path to accelerate boot | Application Framework library

fastup is a Ruby library typically used in Server, Application Framework, Ruby On Rails applications. fastup has no bugs, it has no vulnerabilities and it has low support. However fastup has a Non-SPDX License. You can download it from GitHub.

Fastup builds an index from $LOAD_PATH and patches require to use that index to significantly speed up booting up large Rails apps with many dependencies. When require 'code' is called, Ruby searches each element of $LOAD_PATH, attempting to load code.rb from each directory in $LOAD_PATH. Watching the output of strace while starting a Ruby program reveals a large number of failed attempts to open non-existent files, until the correct path is found. The index built by fastup allows skipping many of these failed attempts. The speedup is most noticeable in applications with many dependencies. With few dependencies, the overhead of fastup will cause a small slowdown. Test the speedup first, to see if fastup is worth it or not for any particular application.