Bootscale

Speedup applications boot by caching require calls

Installation

Add this line to your application's Gemfile:

gem 'bootscale', require: false

And then execute:

$ bundle

Then you need to add right after require 'bundler/setup':

require 'bundler/setup'
require 'bootscale'
Bootscale.setup(cache_directory: '/path/to/cache/directory')

If your application is a Rails application, you will find this in config/boot.rb.

Important

You must regenerate the cache everytime $LOAD_PATH is modified by calling Bootscale.regenerate.

For Rails apps it means adding an initializer in config/application.rb:

module MyApp
  class Application < Rails::Application
    initializer :regenerate_require_cache, after: :set_load_path do
      Bootscale.regenerate
    end
  end
end

Usage

Just install it that's all!

How much faster is it?

It totally depends on your number of gems. Under 100 gems you likely won't see the difference, but for bigger applications (300+ gems) it can make the application boot up to 30% faster.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/byroot/bootscale.

Thanks to Aaron Patterson for the idea of converting relative paths to absolute paths.