How to customise KrakenD gateway to monetise an API?

I'm having KrakenD as API gateway for backend services. I wish to monetize one API in KrakenD gateway. But, how do I use Krakend HTTP server plugin for same? Do I put the request, response using this plugin in queu开发者_如何学Goe and then consumer puts it in database? Or is there a better approach to this?