Book Image

Building Serverless Python Web Services with Zappa

By : Abdulwahid Abdulhaque Barguzar
Book Image

Building Serverless Python Web Services with Zappa

By: Abdulwahid Abdulhaque Barguzar

Overview of this book

Serverless applications are becoming very popular these days, not just because they save developers the trouble of managing the servers, but also because they provide several other benefits such as cutting heavy costs and improving the overall performance of the application. This book will help you build serverless applications in a quick and efficient way. We begin with an introduction to AWS and the API gateway, the environment for serverless development, and Zappa. We then look at building, testing, and deploying apps in AWS with three different frameworks--Flask, Django, and Pyramid. Setting up a custom domain along with SSL certificates and configuring them with Zappa is also covered. A few advanced Zappa settings are also covered along with securing Zappa with AWS VPC. By the end of the book you will have mastered using three frameworks to build robust and cost-efficient serverless apps in Python.
Table of Contents (20 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Chapter 3. Building a Flask Application with Zappa

In the last chapter, we learned about automating the deployment process using Zappa, since Zappa helps us to deploy a Python application on the AWS Serverless infrastructure. We used this to develop a Python application using some of the Python web frameworks. In this chapter, we going to develop a Flask-based application as a serverless application on AWS Lambda.

In the previous chapter, we saw how Zappa is useful for performing serverless deployments and how it makes it easy to deploy with a single command. Now, it's time to see the larger application deployed by Zappa, since it's really important to see how an application is configured and moved to AWS Lambda.

In this chapter, we'll be covering the following topics:

  • What is Flask?
  • Minimal Flask application
  • Configuring with Zappa
  • Building, testing, and deploying on AWS Lambda
  • A complete Flask Todo application