设置商品评论频率

if 'HTTP_X_FORWARDED_FOR' in request.META:
    ip = request.META.get('HTTP_X_FORWARDED_FOR')
else:
    ip = request.META.get('REMOTE_ADDR')

if r.get('ip'):
    return Response({"code": 403, 'message': '您评论的速度太快了，请歇一歇'})
r.set('ip', 'exist')
r.expire('ip', 30)
return Response({'code': 200, 'message': '评论成功'})