class Restforce::Middleware::Caching

def cache_on_complete(env)
  key = cache_key(env)
  if (cached_response = cache.read(key))
    finalize_response(cached_response, env)
  else
    # response.status is nil at this point
    # any checks need to be done inside on_complete block
    @app.call(env).on_complete do |response_env|
      store_response_in_cache(key, response_env.response)
      response_env
    end
  end
end