GitHub - rack/rack: A modular Ruby web server interface.NOTE: Rack v3.0.0 was recently released. Please check the Upgrade Guide for more details about migrating your existing servers, middlewares and applications. For detailed information on specific changes, check the Change Log. Rack provides a minimal, modular, and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it un
