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Hands-On Serverless Computing
Hands-On Serverless Computing

Hands-On Serverless Computing: Build, run and orchestrate serverless applications using AWS Lambda, Microsoft Azure Functions, and Google Cloud Functions

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Profile Icon Kuldeep Chowhan
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Paperback Jul 2018 350 pages 1st Edition
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Arrow left icon
Profile Icon Kuldeep Chowhan
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Paperback Jul 2018 350 pages 1st Edition
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Hands-On Serverless Computing

Development Environment, Tools, and SDKs

In this chapter, we will look at how to set up your development environment, which programming language to use, the tools that you can use, and the SDKs that are provided by AWS, Microsoft Azure, and Google Cloud for developing serverless applications.

In this chapter, we will cover the following topics:

  • Development environment setup
  • Tools
  • SDKs from cloud providers

Development environment and tools

Let's look at the development environment and the tools that we will need to create and run the serverless applications that we will create in later chapters. We will be using Visual Studio Code for code editing, Node.js and JavaScript for writing our serverless applications, and we will use tools such as Postman to test our serverless applications. Let's start by looking at what Visual Studio Code is, the benefits it provides, its installation instructions, and the Visual Studio Code user interface.

Visual Studio Code

Microsoft's Visual Studio Code is a free, open source code editor that runs on all operating systems (macOS, Linux, and Windows). It supports development operations such as task running, debugging, and version control. It provides the tools developers will need for a code, build, and debug cycle, leaving more complex workflows to more fully featured IDEs.

Visual Studio Code is a lightning fast code editor, perfect for day-to-day use. With support for hundreds of languages, it aids productivity with auto-indentation, syntax highlighting, box-selection, bracket-matching, snippets, and more. It features intuitive keyboard shortcuts, easy customization of the editor using user-defined settings, and its community-contributed keyboard shortcut mappings will let you navigate your source code with ease. It also has built-in support for code completion—IntelliSense...

Node.js

Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. The Node.js package ecosystem, npm (https://www.npmjs.com/), is the largest ecosystem of open source libraries in the world. Node.js is a platform for building fast and scalable server applications using JavaScript. We will be using Node.js when we write serverless applications in later chapters, which we will use to deploy to AWS, Microsoft Azure, and Google Cloud Platform.

As an asynchronous event-driven JavaScript runtime, Node is designed to build scalable network applications. In the following, hello readers example, many connections can be handled concurrently. Upon each connection, the callback is fired, but if there is no work to be done, Node will sleep:

const http = require('http...

Postman

Postman makes developing APIs easy and it is the most complete toolset for API development. Postman has been designed with developers in mind and it is packed with lots of options and features:

  • It is the most widely used REST client around the world
  • It has been designed to support API developers from the ground up
  • It has an intuitive user interface to create workflows, add tests, send requests to endpoints, and save the responses for the API calls

Postman's options and features are:

  • It stores all the requests made
  • It supports variable substitutions
  • It has support for creating environments
  • It has support for tests & pre-request scripts
  • It has support for collections
  • It supports request descriptions

Installation

...

SDKs

Software Development Kits (SDKs) are tools that will help you to write serverless applications on the three cloud providers. AWS, Microsoft Azure, and GCP all provide different SDKs for different languages, so that you can integrate their services into your applications. Let's look at the SDKs that each cloud provider has that we would need to integrate into our serverless applications.

AWS Node.js SDK

AWS offers SDKs for many different languages, including Node.js. Some of the languages for which it offers SDKs are:

  • Node.js
  • Java
  • .NET
  • Go
  • C++
  • Python
  • Ruby
  • iOS
  • Android
  • Browsers (Internet Explorer, Chrome, Safari etc.,)
  • AWS IOT

However, there are many more languages and platforms that could be included in this list...

Summary

In this chapter, you learned about setting up a development environment for writing serverless applications by installing Visual Studio Code, and gained an understanding of the Node.js programming language, and installed it. You also learned about Postman and how it can help you to API test serverless applications. You also learned about the different Node.js SDKs that AWS, Microsoft Azure, and GCP provide, which we will be using in later chapters to write our serverless applications.

In the next chapter, we will dig deep into what AWS Lambda is and other serverless offerings from AWS.

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Key benefits

  • •Understand the concept of Function-as-a-Service
  • •Implement Serverless solutions using AWS Lambda, Azure Functions and Google Cloud Functions
  • •Practical approach towards choosing the best tool for your serverless environment

Description

Serverless applications and architectures are gaining momentum and are increasingly being used by companies of all sizes. Serverless software takes care of many problems that developers face when running systems and servers, such as fault tolerance, centralized logging, horizontal scalability, and deployments. You will learn how to harness serverless technology to rapidly reduce production time and minimize your costs, while still having the freedom to customize your code, without hindering functionality. Upon finishing the book, you will have the knowledge and resources to build your own serverless application hosted in AWS, Microsoft Azure, or Google Cloud Platform, and will have experienced the benefits of event-driven technology for yourself. This hands-on guide dives into the basis of serverless architectures and how to build them using Node.js as a programming language, Visual Studio Code for code editing, and Postman for quickly and securely developing applications without the hassle of configuring and maintaining infrastructure on three public cloud platforms.

Who is this book for?

This book is targeted towards developers, system administrators or any stakeholder working in the Serverless environment and want to understand how functions work. Basic idea of serverless architecture can be an added advantage

What you will learn

  • •Understand the benefts of serverless computing and know when to use it
  • •Develop serverless applications on AWS, Azure, and Google Cloud
  • •Get to grips with Function as a Service (FaaS)
  • •Apply triggers to serverless functions
  • •Build event-driven apps using serverless frameworks
  • •Use the Node.js programming language to build serverless apps
  • •Use code editors, such as Visual Studio Code, as development environments
  • •Master the best development practices for creating scalable and practical solutions
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Length: 350 pages
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Table of Contents

15 Chapters
What is Serverless Computing? Chevron down icon Chevron up icon
Development Environment, Tools, and SDKs Chevron down icon Chevron up icon
Getting Started with AWS Lambda Chevron down icon Chevron up icon
Triggers and Events for AWS Lambda Chevron down icon Chevron up icon
Your First Serverless Application on AWS Chevron down icon Chevron up icon
Serverless Orchestration on AWS Chevron down icon Chevron up icon
Getting Started with Azure Functions Chevron down icon Chevron up icon
Triggers and Bindings for Azure Functions Chevron down icon Chevron up icon
Your First Serverless Application on Azure Chevron down icon Chevron up icon
Getting Started with Google Cloud Functions Chevron down icon Chevron up icon
Triggers and Events for Google Cloud Functions Chevron down icon Chevron up icon
Your First Serverless Application on Google Cloud Chevron down icon Chevron up icon
Reference Architecture for a Web App Chevron down icon Chevron up icon
Reference Architecture for a Real-time File Processing Chevron down icon Chevron up icon
Other Books You May Enjoy Chevron down icon Chevron up icon
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