Django Cassandra Engine

django-cassandra-engine is a database wrapper for Django Framework. It uses the latest cassandra-driver while primarily utilizing Cqlengine which is currently the best Cassandra CQL 3 Object Mapper for Python and was integrated into cassandra-driver.

License:	2-clause BSD
Keywords:	django, cassandra, orm, nosql, database, python
URL (pypi):	django-cassandra-engine

Installation

Recommended installation:

pip install django-cassandra-engine

Usage

1. Add django-cassandra-engine to INSTALLED_APPS in your settings.py file:

   INSTALLED_APPS = ('django_cassandra_engine',) + INSTALLED_APPS
   

IMPORTANT: This app should be the first app on INSTALLED_APPS list.

1. Also change DATABASES setting:

   DATABASES = {
       'default': {
           'ENGINE': 'django_cassandra_engine',
           'NAME': 'db',
           'TEST_NAME': 'test_db',
           'HOST': 'db1.example.com,db2.example.com',
           'OPTIONS': {
               'replication': {
                   'strategy_class': 'SimpleStrategy',
                   'replication_factor': 1
               }
           }
       }
   }
   

2. Define some model:

   #  myapp/models.py
   import uuid
   from cassandra.cqlengine import columns
   from cassandra.cqlengine.models import Model
   
   class ExampleModel(Model):
       read_repair_chance = 0.05 # optional - defaults to 0.1
       example_id      = columns.UUID(primary_key=True, default=uuid.uuid4)
       example_type    = columns.Integer(index=True)
       created_at      = columns.DateTime()
       description     = columns.Text(required=False)
   

3. Run ./manage.py sync_cassandra

4. Done!

Documentation

You can find documentation here.