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Hands-On Serverless Applications with Go

By : Mohamed Labouardy

5 (1)

Hands-On Serverless Applications with Go

5 (1)

By: Mohamed Labouardy

Overview of this book

Serverless architecture is popular in the tech community due to AWS Lambda. Go is simple to learn, straightforward to work with, and easy to read for other developers; and now it's been heralded as a supported language for AWS Lambda. This book is your optimal guide to designing a Go serverless application and deploying it to Lambda. This book starts with a quick introduction to the world of serverless architecture and its benefits, and then delves into AWS Lambda using practical examples. You'll then learn how to design and build a production-ready application in Go using AWS serverless services with zero upfront infrastructure investment. The book will help you learn how to scale up serverless applications and handle distributed serverless systems in production. You will also learn how to log and test your application. Along the way, you'll also discover how to set up a CI/CD pipeline to automate the deployment process of your Lambda functions. Moreover, you'll learn how to troubleshoot and monitor your apps in near real-time with services such as AWS CloudWatch and X-ray. This book will also teach you how to secure the access with AWS Cognito. By the end of this book, you will have mastered designing, building, and deploying a Go serverless application.

Preface

Preface

Who this book is for

What this book covers

To get the most out of this book

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Free Chapter

Go Serverless

Go Serverless

The serverless paradigm

AWS Lambda

Go serverless

Summary

Questions

Getting Started with AWS Lambda

Getting Started with AWS Lambda

Technical requirements

Setting up the AWS environment

Setting up the Go environment

Summary

Questions

Developing a Serverless Function with Lambda

Developing a Serverless Function with Lambda

Technical requirements

Writing a Lambda function in Go

Execution role

Deployment package

Event testing

Summary

Questions

Setting up API Endpoints with API Gateway

Setting up API Endpoints with API Gateway

Technical requirements

Getting started with API Gateway

Building a RESTful API

Summary

Managing Data Persistence with DynamoDB

Managing Data Persistence with DynamoDB

Technical requirements

Setting up DynamoDB

Working with DynamoDB

Summary

Questions

Deploying Your Serverless Application

Deploying Your Serverless Application

Lambda CLI commands

Versions and aliases

Summary

Implementing a CI/CD Pipeline

Implementing a CI/CD Pipeline

Technical requirements

Continuous Integration and deployment workflow

Automating the deployment of Lambda functions

Summary

Questions

Scaling Up Your Application

Scaling Up Your Application

Technical requirements

Load testing and scaling

Concurrent execution

Summary

Building the Frontend with S3

Building the Frontend with S3

Technical requirements

Single Page Application

S3 static website hosting

API documentation

Summary

Questions

Testing Your Serverless Application

Testing Your Serverless Application

Technical requirements

Unit testing

Integration testing

Load testing

Summary

Questions

Monitoring and Troubleshooting

Monitoring and Troubleshooting

Monitoring and debugging with AWS CloudWatch

Tracing with AWS X-Ray

Summary

Securing Your Serverless Application

Securing Your Serverless Application

Technical requirements

Authentication and user control access

Encrypted environment variables

Logging AWS Lambda API calls with CloudTrail

Vulnerability scanning for your dependencies

Summary

Questions

Designing Cost-Effective Applications

Designing Cost-Effective Applications

Lambda pricing model

Optimal memory size

Code optimization

Lambda cost and memory tracking

Summary

Infrastructure as Code

Infrastructure as Code

Technical requirements

Deploying AWS Lambda with Terraform

Deploying AWS Lambda with CloudFormation

Deploying AWS Lambda with SAM

Summary

Questions

Assessments

Assessments

Chapter 1: Go Serverless

Chapter 2: Getting Started with AWS Lambda

Chapter 3: Developing a Serverless Function with Lambda

Chapter 5: Managing Data Persistence with DynamoDB

Chapter 7: Implementing a CI/CD Pipeline

Chapter 9: Building the Frontend with S3

Chapter 10: Testing Your Serverless Application

Chapter 12: Securing Your Serverless Application

Chapter 14:

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Deploying AWS Lambda with CloudFormation

AWS CloudFormation is an infrastructure-as-code tool for specifying resources in a declarative way. You model all the resources you want AWS to spin up in a blueprint document (template) and AWS creates the defined resources for you. Thus, you spend less time managing those resources and more time focusing on your applications that run in AWS.

Terraform covers almost all services and features by AWS and supports third-party providers (platform-agnostic) while CloudFormation is AWS specific (vendor lock-in).

You can use AWS CloudFormation to specify, deploy, and configure serverless applications. You create a template that describes your serverless application dependencies (Lambda functions, DynamoDB tables, API Gateway, IAM roles, and so on), and AWS CloudFormation takes care of provisioning and configuring those resources for you. You...

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