rubygems/gemstash: A RubyGems.org cache and private gem server

Gemstash is both a cache for remote servers such as https://rubygems.org, and a private gem source. If you are using bundler across many machines that have access to a server within your control, you might want to use Gemstash. If you produce gems that you don’t want everyone in the world to have access to, you might want to use Gemstash. If you frequently bundle the same set of gems across multiple projects, you might want to use Gemstash. Are you only using gems from https://rubygems.org, and don’t bundle the same gems frequently? Well, maybe you don’t need Gemstash… yet.