Welcome to the final lesson of our course on enhancing your To-Do API. Today, we will focus on implementing pagination. You have already learned how to filter and sort your To-Do items, which are essential for making your API more user-friendly and efficient. Imagine your app grows and some users have thousands of tasks. Loading all of them to the web-page can be inefficient.

Pagination allows you to break down large data sets into smaller, manageable chunks. This not only improves performance but also enhances the user experience by preventing information overload.

By the end of this lesson, you'll be able to implement and customize pagination for your To-Do API using Django Rest Framework’s PageNumberPagination. Let's get started!

To enhance our To-Do API with pagination, we'll use Django Rest Framework’s PageNumberPagination. This allows us to manage large datasets by serving data in smaller, more manageable pages.

First, create a pagination.py file in your app directory. Here’s a simple custom pagination class:

Pagination is the process of dividing a large set of data into sequential pages. In Django Rest Framework, the PageNumberPagination class is a built-in utility to handle this. Here's how it works:

• page_size: This attribute sets the default number of records to be displayed per page. In our case, it is set to 2.