title: Streaming a PDF file
body: <p>I am trying to build a Rest API which provides the ability to stream a PDF file to the front, in order to show this file in the front without needing to store it in the local database.
  I am using <strong>django-rest-framewrok</strong> and <strong>flutter</strong> for front-end.
  I want some advice about the technique that help me to implement that...</p>