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

Configuring with Zappa


In order to configure Zappa, it's required that you have Zappa installed, as mentioned in the previous chapter. Zappa provides the zappa initcommand,which enables a user interactive mode initialization so that we can configure the Python application.

I followed the default configuration settings that were suggested by the zappa init command. This generates the zappa_settings.json file, which is the backbone for configuring any Python application with Zappa.

Here is the content of the zappa_settings.json file:

{
  "dev": {
      "app_function": "hello_world.app",
      "aws_region": "ap-south-1",
      "profile_name": "default",
      "project_name": "flask-todo",
      "runtime": "python3.6",
      "s3_bucket": "zappa-yrze3w53y"
  }
}

 

 

 

 

Now, during initialization, Zappa has the ability to identify the type of your Python application and generate the set attributes accordingly. In our case, Zappa detected the Python program as a Flask application. Hence, it asked for...