Returns a 304 if an If-Modified-Since header or If-None-Match is present. Returns the same as a GET otherwise.
    ---
    tags:
      - Response inspection
    parameters:
      - in: header
        name: If-Modified-Since
      - in: header
        name: If-None-Match
    produces:
      - application/json
    responses:
      200:
        description: Cached response
      304:
        description: Modified

def cache():
    """Returns a 304 if an If-Modified-Since header or If-None-Match is present. Returns the same as a GET otherwise.
    ---
    tags:
      - Response inspection
    parameters:
      - in: header
        name: If-Modified-Since
      - in: header
        name: If-None-Match
    produces:
      - application/json
    responses:
      200:
        description: Cached response
      304:
        description: Modified

    """
    is_conditional = request.headers.get("If-Modified-Since") or request.headers.get(
        "If-None-Match"
    )

    if is_conditional is None:
        response = view_get()
        response.headers["Last-Modified"] = http_date()
        response.headers["ETag"] = uuid.uuid4().hex
        return response
    else:
        return status_code(304)