Building Multi-Tenant Web Applications with Django
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In this tutorial we are going to build a multi tenant web application with Django. Multi tenancy is used mainly for SaaS (Software As a Service) products.
SaaS is a software delivery model used in the cloud where each customer gets only the service offered by a specific product not the product itself.
The customer gets a relatively isolated environment for its data which other customers don't have access to.
Multitenancy can be achieved using 3 different techniques:
Single Web Application Instance and Multiple Database
With this multitenancy technique, each customer gets his own database which offers the most secure environment for clients but it's also the most costly technique in term of server resources.
Single Web Application Instance and Multiple Schemas
With this multitenancy technique each client or tenant gets his own schema. Schemas are only available with PostgreSQL database system.
Single Web Application Instance, One database and Ane Schema
With this multitenancy technique, tenants share the same database and the same schema. The security and separation is handled only by application code. There is no real separation in client's data. This method is less secure but it takes less server resources.
Multitenancy with Django and PostgreSQL
Each technique has its pros and cons. In this tutorial we are going to achieve multitenancy using the second approach (multiple schemas) thus we need to use the PostgreSQL database system - The framework we are going to use is Django.
We are not going to reinvent the wheel, Django has packages, provided by the great community, available for nearly any functionality you need to implement. The apps we are going to use in this tutorial are:
Django multitenant schema
This one is a great Django app for implementing the second multitenacy technique. It uses schemas feature available in the PostgreSQL database system.
For handling user login and registration. It has many features such as email verification, password reset and social login etc.
Now let's start developing our starter project which supports multitenancy, user login and registration.
Installing Django and related packages
First of all we need to setup our working environement by simply creating a new virtual environment and installing Django and the necessary packages using
pip from your terminal.
Please note that we are assuming you are using Ubuntu but don't worry if you are using another operating system it should be nearly the same steps since Python is a portable environment that works across major operating systems.
So open your terminal and start typing the magic words:
cd into_your_own_working_directory mkdir django_multitenancy_starter_project cd django_multitenancy_starter_project
Now create a virtual env for this project:
Activate this env with:
Now install django with allauth and django-multitenant-schemas
pip install django pip install django-allauth pip install django-multitenant-schemas
Next start your own Django project with:
django-admin startproject .
In this tutorial we have seen some important concepts about multitenancy and how to achieve it.W e have also installed our working environment. In the next part of this tutorial we are going to continue developing our Django project to add multitenancy using the
django-multitenant-schemas pckage and then add user authentication using the