Building Serverless Microservices in Python by Richard, Takashi Freeman -- Read -- Imperial Library of Trantor

Index

Title Page Copyright and Credits

Building Serverless Microservices in Python

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Preface

Who this book is for What this book covers To get the most out of this book

Download the example code files Download the color images Conventions used

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Serverless Microservices Architectures and Patterns

Understanding different architecture types and patterns

The monolithic multi-tier architecture and the monolithic service-oriented architecture Benefits of monolithic architectures Drawbacks of the monolithic architectures Overview of microservices Benefits and drawbacks of microservice architectures SOA versus microservices

Virtual machines, containers, and serverless computing

Virtual machines Containers Serverless computing Comparing virtual machines, containers, and serverless

Overview of microservice integration patterns

Design patterns

Why are patterns useful?

Software design patterns and principles Serverless microservices pattern categories

Communication styles and decomposition microservice patterns

Communication styles

One-to-one communication microservice patterns Many-to-many communication microservice patterns

Decomposition pattern by business capability Decomposition pattern by bounded context

Serverless computing in AWS

Overview of some of the key serverless services in AWS AWS Lambda Serverless computing to implement microservice patterns Example use case – serverless file transformer

Setting up your serverless environment

Setting up your AWS account

Setting up MFA Setting up a new user with keys Managing your infrastructure with code

Installing bash on Windows 10 Updating Ubuntu, installing Git and Python 3 Installing and setting up the AWS CLI

Summary

Creating Your First Serverless Data API

Overview of security in AWS

Why is security important? Security by design principles AWS Identity and Access Management

JavaScript object notation IAM policies IAM users IAM groups IAM roles

Securing your serverless microservices

Lambda security API Gateway security DynamoDB security Monitoring and alerting Find out more

Building a serverless microservice data API

Serverless microservice data API requirements

Query string Data API architecture

Setting up Lambda security in the AWS Management Console

Creating an IAM policy

DynamoDB IAM policy Lambda IAM policy

Creating the Lambda IAM role

Creating and writing to a NoSQL database called DynamoDB using AWS

Creating a DynamoDB in AWS Writing data to DynamoDB using AWS Querying DynamoDB using AWS

DynamoDB Scan in AWS Management Console DynamoDB Query in AWS Management Console

Deleting DynamoDB using AWS

Creating and writing to a NoSQL database called DynamoDB using Python

Creating a DynamoDB table using Python Writing to DynamoDB using Python Querying DynamoDB using Python

Creating a Lambda to query DynamoDB

Creating the Lambda function Testing the Lambda function

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

Manually provisioning infrastructure Infrastructure as code Building and deploying using the Serverless Application Model (SAM) Building and deploying using alternate options

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

Creating an AWS credentials profile Creating an S3 bucket Setting up the configuration files for your AWS account Updating the polices and assuming roles files Creating the IAM roles and policies Checking the IAM roles and policies

Building and deploying with API Gateway, Lambda, and DynamoDB

Building the Lambda as a ZIP package SAM YAML template Packaging and deploying your serverless stack Putting it all together Manually testing the serverless microservice Making code and configuration changes Deleting the serverless stack

Summary

Testing Your Serverless Microservice

Unit testing your Python Lambda code

Why is testing important? Types of testing Unit testing Lambda Python code

The sample test data The unit test

Mocking Running the unit test Code coverage

Running and debugging your AWS Lambda code locally

Batch-loading data into DynamoDB Running the Lambda locally

Integration testing using real test data

Testing that a Lambda has been deployed correctly Testing that API Gateway has been deployed correctly

The AWS Serverless Application Model CLI Loading and end-to-end testing at scale

Load testing your serverless microservice

Strategies to reduce the API's latency Cleaning up Summary

Securing Your Microservice

Overview of the security in AWS

Why is security important? Types of security terms in AWS

Overview of AWS Identity and Access Management (IAM)

IAM users IAM groups IAM roles

Securing your serverless microservice

Lambda security DynamoDB security Monitoring and alerting

Summary

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