title: Session in FastAPI
body: <p>I want to build a shopping cart with FastAPI and Jinja as my template <br>
  So I need to save data for each anonymous user at the session. <br>
  Django and flask have a built-in session function that we can do it easily. <br>
  One of the solutions can be using the SQLAlchemy session but the SQLAlchemy session doesn't support anonymous users and we have to create tokens separately for each session. then we should save each data with the stored token.<br>
  Is there any other way similar to Django and Flask's built-in function?</p>