marlowe

https://github.com/KineticCafe/marlowe

{Marlowe}[https://github.com/KineticCafe/marlowe] is a Rack middleware that extracts or creates a request ID using a pre-defined header, permitting request correlation across multiple services. When using Rails, Marlowe automatically adds itself to the middleware before Rails::Rack::Logger. As of Marlowe 3.0, a Faraday middleware is provided (require 'marlowe/faraday').