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Hands-On Serverless Applications with Go

Hands-On Serverless Applications with Go

By : Mohamed Labouardy
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Hands-On Serverless Applications with Go

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.
Table of Contents (17 chapters)
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Integration testing

Unlike unit testing, which tests a unit of the system, integration testing focuses on testing the Lambda function as a whole. So, how do we test Lambda functions in a local development environment without deploying them to AWS? Read on to find out more.

RPC communications

If you read the code under the hood of the official Go library for AWS Lambda (https://github.com/aws/aws-lambda-go), you will notice that Go-based Lambda functions are invoked using net/rpc over TCP. Every Go Lambda function starts a server on a port defined by the _LAMBDA_SERVER_PORT environment variable and waits for incoming requests. To interact with the function, two RPC methods are used:

  • Ping: Used to check whether the function...
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