Prerequisites

• Install the latest version of Java 8 or Java 11, either the Oracle Java Standard Edition 8 / Oracle Java Standard Edition 11 (Long Term Support) or OpenJDK 8 / OpenJDK 11. To verify that you have the correct version of java installed, type java -version.
• For using cqlsh, the latest version of Python 3.6+ or Python 2.7 (support deprecated). To verify that you have the correct version of Python installed, type python --version.

Install the Debian packages

• Add the repository for version cassandra {41_version} (41x):

  echo "deb [signed-by=/etc/apt/keyrings/apache-cassandra.asc] https://debian.cassandra.apache.org 41x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list
  

• Add the Apache Cassandra repository keys to the list of trusted keys on the server:

  curl -o /etc/apt/keyrings/apache-cassandra.asc https://downloads.apache.org/cassandra/KEYS
  

  sudo apt-get update
  

• Install Cassandra with APT:

  sudo apt-get install cassandra
  

• Start Cassandra service:

  sudo systemctl start cassandra
  

  sudo systemctl enable cassandra
  

• Check the status of Cassandra:

  sudo nodetool status
  

Install the Python packages

• Install Python and pip

  sudo apt install python3 python3-pip python3-venv -y
  

• Create Virtual Environemnt:

  python3 -m venv path/to/env/folder
  source path/to/env/folder/bin/activate
  

• Install requirements:

  pip install -r cassandra_poc/requirements.txt
  

• Start django server:

  cd cassandra_poc &&\
  ./manage.py runserver
  

Steps needed to create a new Django project

• Start a new Django project

  django-admin startproject myproject
  cd myproject
  

• Create a new app

  python manage.py startapp myapp
  

• Modify myproject/settings.py to configure Cassandra as the database:

  # settings.py
  
  DATABASES = {
      'default': {
          'ENGINE': 'django_cassandra_engine',
          'NAME': 'mykeyspace',  # Replace with your keyspace
          'HOST': '127.0.0.1',
          'OPTIONS': {
              'replication': {
                  'strategy_class': 'SimpleStrategy',
                  'replication_factor': 1
              },
              'connection': {
                  'consistency': 1,
                  'retry_connect': True,
                  'lazy_connect': True
              }
          }
      }
  }
  
  # Add 'myapp' to INSTALLED_APPS
  INSTALLED_APPS = [
      # Other installed apps
      'django_cassandra_engine',
      'myapp',
  ]

• Create the Cassandra Keyspace:

  sudo cqlsh
  

  CREATE KEYSPACE mykeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1};
  

• Performing Migrations:

  Since Cassandra doesn’t have Django migrations, you don’t need to run the usual migration commands.Run the following command instead:

  python manage.py sync_cassandra