Book Image

Building Serverless Microservices in Python

By : Richard Takashi Freeman
Book Image

Building Serverless Microservices in Python

By: Richard Takashi Freeman

Overview of this book

Over the last few years, there has been a massive shift from monolithic architecture to microservices, thanks to their small and independent deployments that allow increased flexibility and agile delivery. Traditionally, virtual machines and containers were the principal mediums for deploying microservices, but they involved a lot of operational effort, configuration, and maintenance. More recently, serverless computing has gained popularity due to its built-in autoscaling abilities, reduced operational costs, and increased productivity. Building Serverless Microservices in Python begins by introducing you to serverless microservice structures. You will then learn how to create your first serverless data API and test your microservice. Moving on, you'll delve into data management and work with serverless patterns. Finally, the book introduces you to the importance of securing microservices. By the end of the book, you will have gained the skills you need to combine microservices with serverless computing, making their deployment much easier thanks to the cloud provider managing the servers and capacity planning.
Table of Contents (13 chapters)
Title Page
Dedication

Building and deploying with API Gateway, Lambda, and DynamoDB

There are three steps involved in deploying a serverless stack:

  1. Build Lambda as a ZIP package
  2. Package your serverless stack using SAM and CloudFormation
  3. Deploy your serverless stack using SAM and CloudFormation

Building the Lambda as a ZIP package

Install ZIP if it is not installed already. For Ubuntu/Debian, you can use sudo apt-get install zip -y. Create a file called create-lambda-package.sh with the following content:

#!/bin/sh
#setup environment variables
. ./common-variables.sh

#Create Lambda package and exclude the tests to reduce package size
(cd ../../lambda_dynamo_read;
mkdir -p ../package/
zip -FSr ../package/"${zip_file}" ${files} -x *tests/*)

This...