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Building Serverless Microservices in Python

By : Takashi Freeman

3 (5)

Buy this Book

Building Serverless Microservices in Python

3 (5)

By: Takashi Freeman

Buy this Book

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.

Preface

Who this book is for

What this book covers

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Free Chapter

Serverless Microservices Architectures and Patterns

Understanding different architecture types and patterns

Virtual machines, containers, and serverless computing

Overview of microservice integration patterns

Communication styles and decomposition microservice patterns

Serverless computing in AWS

Setting up your serverless environment

Summary

Creating Your First Serverless Data API

Overview of security in AWS

Securing your serverless microservices

Building a serverless microservice data API

Setting up Lambda security in the AWS Management Console

Creating and writing to a NoSQL database called DynamoDB using AWS

Creating and writing to a NoSQL database called DynamoDB using Python

Creating a Lambda to query DynamoDB

Setting up the API Gateway and integrating it with a Lambda proxy

Connecting API Gateway, Lambda, and DynamoDB

Cleaning-up

Summary

Deploying Your Serverless Stack

An overview of serverless stack build and deploy options

Creating a profile, an S3 bucket, IAM policies, and IAM roles resources

Building and deploying with API Gateway, Lambda, and DynamoDB

Summary

Testing Your Serverless Microservice

Unit testing your Python Lambda code

Running and debugging your AWS Lambda code locally

Integration testing using real test data

The AWS Serverless Application Model CLI

Loading and end-to-end testing at scale

Strategies to reduce the API's latency

Cleaning up

Summary

Securing Your Microservice

Overview of the security in AWS

Overview of AWS Identity and Access Management (IAM)

Securing your serverless microservice

Summary

Summary and Future Work

Book summary

Future work

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Setting up the API Gateway and integrating it with a Lambda proxy

Now that we know the Lambda function works with some API Gateway test data, and returns a header and body with a statusCode of 200, we just need to add the API Gateway that will invoke the Lambda function, as shown in the following diagram:

Perform the following steps:

Sign in to the AWS Management Console and open the API Gateway console at https://console.aws.amazon.com/apigateway/.
Choose Get Started or, in the Amazon API Gateway navigation pane, choose APIs and choose Create API.
On the Create page, perform the following steps:
1. In Choose Protocol, select REST
2. In Create new API, select New API
3. Under Settings, type metrics for API name
4. Choose Regional for Endpoint Type
5. Choose Create API
Choose Create Resource from the Actions drop-down menu.
In the New Child Resource window, perform the following steps...