Serverless Applications with Node.js

Name: Serverless Applications with Node.js | Using AWS Lambda and Claudia.js
Brand: Manning
Price: 35.63 EUR
Availability: OnlineOnly

Using AWS Lambda and Claudia.js

Slobodan Stojanovic Aleksandar Simovic(Autor*in)

Manning (Verlag)

1. Auflage

Erschienen am 12. Februar 2019

352 Seiten

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Beschreibung

Summary

Serverless Applications with Node.js walks you through building serverless apps on AWS using JavaScript. Inside, you'll discover what Claudia.js brings to the table as you build and deploy a scalable event-based serverless application, based around a pizzeria that's fully integrated with AWS services, including Lambda and API Gateway. Each chapter is filled with exercises, examples, tips, and more to make sure you're ready to bring what you've learned into your own work.

Foreword by Gojko Adzic.

Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.

About the Technology

The benefits of cloud-hosted serverless web apps are undeniable: lower complexity, quicker time to market, and easier scalability than traditional, server-dependent designs. And thanks to JavaScript support in AWS Lambda and powerful new serverless API tools like the Claudia.js library, you can build and deploy serverless apps end to end without learning a new language.

About the Book

Serverless Applications with Node.js teaches you to design and build serverless web apps on AWS using JavaScript, Node, and Claudia.js. You'll master the basics of writing AWS Lambda functions, along with core serverless patterns like API Gateway. Along the way, you'll practice your new skills by building a working chatbot and a voice assistant with Amazon Alexa. You'll also discover techniques for migrating existing apps to a serverless platform.

What's inside

Authentication and database storage
Asynchronous functions
Interesting real-world examples
Developing serverless microservices

About the Reader

For web developers comfortable with JavaScript and Node.js.

About the Author

Slobodan Stojanovic and Aleksandar Simovic are AWS Serverless Heroes and core contributors to the Claudia.js project. They are also coauthors of Desole, an open source serverless errortracking tool, and the lead developers of Claudia Bot Builder.

Table of Contents

PART 1 - Serverless pizzeria

Introduction to serverless with Claudia
Building your first serverless API
Asynchronous work is easy, we Promise()
Pizza delivery: Connecting an external service
Houston, we have a problem!
Level up your API
Working with files

PART 2 - Let's talk

When pizza is one message away: Chatbots
Typing... Async and delayed responses
Jarvis, I mean Alexa, order me a pizza
Paying for pizza
Migrating to serverless
Real-world case studies
appendix A - Installation and configuration
appendix B - Facebook Messenger, Twilio, and Alexa configuration
appendix C - Stripe and MongoDB setup
appendix D - The pizza recipe

Weitere Details

Weitere Ausgaben

Personen

Inhalt

Intro
Titlepage
Copyright
preface
acknowledgments
about this book
Who should read this book
How this book is organized
About the code
Book forum
Online resources
about the authors
about the cover illustration
Part 1: Serverless pizzeria
Chapter 1: Introduction to serverless with Claudia
1.1 Servers and washing machines
1.2 The core concepts
1.3 How does serverless work?
1.4 Serverless in practice
1.4.1 Aunt Maria's serverless pizzeria
1.4.2 A common approach
1.4.3 Serverless approach
1.5 Serverless infrastructure - AWS
1.6 What is Claudia, and how does it fit?
1.7 When and where you should use it
Summary
Chapter 2: Building your first serverless API
2.1 Assembling pizza ingredients: building the API
2.1.1 Which pizza can I GET?
2.1.2 Structuring your API
2.1.3 POSTing an order
2.2 How Claudia deploys your API
2.3 Traffic control: How API Gateway works
2.4 When a serverless API is not the solution
2.5 Taste it!
2.5.1 Exercise
2.5.2 Solution
Summary
Chapter 3: Asynchronous work is easy, we Promise()
3.1 Storing the orders
3.2 Promising to deliver in less than 30 minutes!
3.3 Trying out your API
3.4 Getting orders from the database
3.5 Taste it!
3.5.1 Exercise
3.5.2 Solution
Summary
Chapter 4: Pizza delivery: Connecting an external service
4.1 Connecting to an external service
4.2 Connecting to the delivery API
4.2.1 The Some Like It Hot Delivery API
4.2.2 Creating your first delivery request
4.3 Potential issues with async communication
4.3.1 Forgetting to return a promise
4.3.2 Not passing the value from the promise
4.3.3 Not wrapping the external service in a promise
4.3.4 Timeout issues with long async operations
4.4 Taste it!
4.4.1 Exercise
4.4.2 Solution
Summary
Chapter 5: Houston, we have a problem!
5.1 Debugging a serverless app
5.2 Debugging your Lambda function
5.3 X-Ray your app
5.4 Taste it!
5.4.1 Exercise
5.4.2 Solution
Summary
Chapter 6: Level up your API
6.1 Serverless authentication and authorization
6.2 Creating user and identity pools
6.2.1 Controlling API access with Cognito
6.3 Taste it!
6.3.1 Exercise
6.3.2 Solution
Summary
Chapter 7: Working with files
7.1 Storing static files in a serverless application
7.2 Generating thumbnails
7.2.1 Deploying your S3 function
7.3 Taste it!
7.3.1 Exercise
7.3.2 Solution
7.4 End of part 1: Special exercise
7.4.1 Advanced task
Summary
Part 2: Let's talk
Chapter 8: When pizza is one message away: Chatbots
8.1 Pizza ordering beyond the browser
8.2 Hello from Facebook Messenger
8.3 What kinds of pizzas do you have?
8.4 Speeding up the deployment
8.5 Messenger templates
8.6 How does Claudia Bot Builder work?
8.7 Taste it!
8.7.1 Exercise
8.7.2 Solution
Summary
Chapter 9: Typing... Async and delayed responses
9.1 Making chatbots interactive
9.1.1 Tap to order: answering a postback
9.2 Making the chatbot structure more scalable
9.3 Connecting your chatbot to the DynamoDB database
9.4 Getting the user's location from the chatbot
9.5 Scheduling a delivery
9.6 Small talk: Integrating simple NLP
9.7 Taste it!
9.7.1 Exercise
9.7.2 Solution
9.7.3 Advanced exercise
Summary
Chapter 10: Jarvis, I mean Alexa, order me a pizza
10.1 Can't talk right now: sending an SMS with Twilio
10.1.1 An SMS pizza list
10.1.2 Ordering a pizza
10.2 Hey Alexa!
Anatomy of an Alexa skill
10.2.1 Preparing the skill
10.2.2 Ordering pizza with Alexa
10.3 Taste it!
10.3.1 Exercise
10.3.2 Solution
10.4 End of part 2: special exercise
Summary
Part 3: Next steps
Chapter 11: Testing, Testing, 1, 2, 3
11.1 Testing server-hosted and serverless applications
11.2 How to approach testing serverless applications
11.3 Preparation
11.4 Unit tests
11.5 Mocking your serverless functions
11.6 Integration tests
11.7 Other types of automated testing
11.8 A step beyond: Writing testable serverless functions
11.9 Taste it!
11.9.1 Exercise
11.9.2 Solution
Summary
Chapter 12: Paying for pizza
12.1 Payment transactions
12.1.1 Implementing an online payment
12.2 Implementing your payment service
12.3 Could someone hack your payment service?
12.3.1 Standards
12.3.2 Competence
12.4 Taste it!
12.4.1 Exercise
12.4.2 Solution
Summary
Chapter 13: Migrating your existing Express.js app to AWS Lambda
13.1 Uncle Roberto's taxi application
13.2 Running an Express.js application in AWS Lambda
13.2.1 Proxy integration
13.2.2 How serverless-express works
13.3 Serving static content
13.4 Connecting to MongoDB
13.4.1 Using a managed MongoDB database with your serverless Express.js app
13.5 Limitations of serverless Express.js applications
13.6 Taste it!
13.6.1 Exercise
13.6.2 Solution
Summary
Chapter 14: Migrating to serverless
14.1 Analyzing your current serverless application
14.2 Migrating your existing application to serverless
14.3 Embrace the platform
14.3.1 Serving static files
14.3.2 Storing state
14.3.3 Logs
14.3.4 Continuous integration
14.3.5 Managing environments: production and development
14.3.6 Sharing secrets
14.3.7 VPC (Virtual Private Cloud)
14.4 Optimizing your application
14.4.1 Bundled or single-purpose functions
14.4.2 Choosing the right memory size for your Lambda function
14.5 Facing the challenges
14.5.1 Handling timeouts
14.5.2 Cold starts
14.5.3 DDoS attacks
14.5.4 Vendor lock-in
14.6 Taste it!
Summary
Chapter 15: Real-world case studies
15.1 CodePen
15.1.1 Before serverless
15.1.2 Serverless migration
15.1.3 Cost of the infrastructure
15.1.4 Testing and challenges
15.2 MindMup
15.2.1 Before serverless
15.2.2 Serverless migration
15.2.3 Cost of the infrastructure
15.2.4 Testing, logs, and challenges
Summary
Appendix A: Installation and configuration
Installing Claudia
Configuring Claudia prerequisites
Creating an AWS profile and getting the keys
Installing Claudia API Builder
Installing Claudia Bot Builder
Installing the AWS CLI
Appendix B: Facebook Messenger, Twilio, and Alexa configuration
Facebook Messenger setup
Creating a Facebook page
Creating a Facebook app
Creating a Facebook Messenger chatbot using Claudia Bot Builder
Enabling built-in NLP
Twilio setup
Creating a Twilio account
Getting a Twilio number
Setting up your Twilio Programmable SMS service
Alexa skill setup
Appendix C: Stripe and MongoDB setup
Setting up your Stripe account and retrieving Stripe API keys
Creating a Stripe account
Getting your Stripe API keys
Installing and configuring MongoDB
Creating an account
Configuring your cluster
Appendix D: The pizza recipe
Index
List of Figures
List of Tables
List of Listings

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