class Some(CachingMixin, models.Model):
    id = models.UUIDField(
        primary_key=True,
        default=uuid4,
        editable=False,
        verbose_name='uuid',
    )

    rate = models.FloatField(
        validators=[
            MinValueValidator(0.0001),
            MaxValueValidator(999999999999),
        ],
        null=False,
        verbose_name='rate',
    )
    
    objects = CachingManager()

    def __str__(self):
        return (
            f'| ID:{self.id} |'
            f'RATE: {self.rate} |'
        )

    class Meta:
        verbose_name = 'Some'
        verbose_name_plural = "somes"
        base_manager_name = 'objects'

        index_together = [
            ('rate'),
        ]

if not Some.objects.all():
    objs = [Some(rate=0.0)]
    Some.objects.bulk_create(objs)
else:
    qs = Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
    if qs:
        print('############################')
        objs1 = []
        # print(Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').values())
        zz = Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
        print(zz.rate)            

        qs.rate = 4.3
        objs1.append(qs)
        try:
            if objs1:
                Some.objects.bulk_update(
                    objs1,
                    fields=['rate',]
                )
        except Exception as e:
            print(e)
                    
                    
        zz1 = Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
        print(zz1.rate)

        zz1 = Some.objects.no_cache().filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
        print(zz1.rate)
        
        zz2= Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').values('rate').first()
        print(zz2)
        
        print('############################')

zz1 = Some.objects.filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
print(zz1.rate)  # == 4.1 

zz1 = Some.objects.no_cache().filter(id='d1197bd5-7901-496f-aee1-86cfeb887ece').first()
print(zz1.rate)  # == 4.3