Book Image

Learn Web Development with Python

By : Fabrizio Romano, Gaston C. Hillar, Arun Ravindran
Book Image

Learn Web Development with Python

By: Fabrizio Romano, Gaston C. Hillar, Arun Ravindran

Overview of this book

If you want to develop complete Python web apps with Django, this Learning Path is for you. It will walk you through Python programming techniques and guide you in implementing them when creating 4 professional Django projects, teaching you how to solve common problems and develop RESTful web services with Django and Python. You will learn how to build a blog application, a social image bookmarking website, an online shop, and an e-learning platform. Learn Web Development with Python will get you started with Python programming techniques, show you how to enhance your applications with AJAX, create RESTful APIs, and set up a production environment for your Django projects. Last but not least, you’ll learn the best practices for creating real-world applications. By the end of this Learning Path, you will have a full understanding of how Django works and how to use it to build web applications from scratch. This Learning Path includes content from the following Packt products: • Learn Python Programming by Fabrizio Romano • Django RESTful Web Services by Gastón C. Hillar • Django Design Patterns and Best Practices by Arun Ravindran
Table of Contents (33 chapters)
Title Page
About Packt
Contributors
Preface
Index

Why asynchronous?


Like most WSGI-based web frameworks, Django is synchronous. When a client requests a web page, the request reaches Django through a view and passes through various lines of code until the rendered web page is returned. As this communication waits or blocks until the process executes all this code, it is termed as synchronous.

New Django developers do not worry about creating asynchronous tasks, but I've noticed that their code eventually accumulates slow blocking tasks, such as image processing or even complex database queries, which leads to unbearably slow page loads. Ideally, they must be moved out of the request-response cycle. Page loading time is critical to user experience, and it must be optimized to avoid any delays.

Another fundamental problem of this synchronous model is the handling of events that are not triggered by web requests. Even if a website does not have any visitors, it must attend to various maintenance activities. They can be scheduled at a particular...