In the previous chapter, you created a follower system and built a user activity stream. You also learned how Django signals work and integrated Redis into your project to count image views. In this chapter, you will learn how to build a basic online shop. You will create a catalog of products and implement a shopping cart using Django sessions. You will also learn how to create custom context processors and launch asynchronous tasks using Celery.

In this chapter, you will learn to:

• Create a product catalog
• Build a shopping cart using Django sessions
• Manage customer orders
• Send asynchronous notifications to customers using Celery