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django-multidatabase-queryset
Use multi database as one.
It's a common scenario that you want to
store hot data in the default database (using SSD) and
store cold data in the db_cold database (using HDD).
You want to use it like normal queryset without considering it.
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Usage
# add django_multidatabase_queryset to your project apps
INSTALLED_APPS = [
...
"django_multidatabase_queryset",
]
# inherit the django_multidatabase_queryset.models.MultiDataBaseModel, set the database used
class UserAction(MultiDataBaseModel):
DATABASES = ["default", "db_cold"]
type = models.TextField(default="")
detail = models.JSONField(default=dict)
# Use the objects as normal objects
data1 = UserAction(id=1, type="type4")
data1.save(using="default")
data2 = UserAction(id=2, type="type3")
data2.save(using="db_cold")
data3 = UserAction(id=3, type="type1")
data3.save(using="db_cold")
order_qs = UserAction.objects.order_by(
"type", "pk")
data = list(order_qs)
LOGGER.info(data)
self.assertEqual(data[0].type, "type1")
self.assertEqual(data[1].type, "type3")
self.assertEqual(data[2].type, "type4")
self.assertEqual(order_qs.count(), 3)
Installation
pip install django-multidatabase-queryset
License
django-multidatabase-queryset
is distributed under the terms of the MIT license.
TODO
- multi queryset slice
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