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Nest.js: A Progressive Node.js Framework

You're reading from   Nest.js: A Progressive Node.js Framework Hit the ground running with Nest.js

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Product type Paperback
Published in Nov 2019
Publisher Packt
ISBN-13 9781800204737
Length 317 pages
Edition 1st Edition
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Authors (6):
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Greg Magolan Greg Magolan
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Greg Magolan
Patrick Housley Patrick Housley
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Patrick Housley
Backstop Media LLC Backstop Media LLC
Author Profile Icon Backstop Media LLC
Backstop Media LLC
Adrien de Peretti Adrien de Peretti
Author Profile Icon Adrien de Peretti
Adrien de Peretti
Jay Bell Jay Bell
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Jay Bell
David Guijarro David Guijarro
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David Guijarro
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Toc

Table of Contents (16) Chapters Close

Preface
1. Introduction 2. Overview FREE CHAPTER 3. Nest.js authentication 4. Dependency Injection system of Nest.js 5. TypeORM 6. Sequelize 7. Mongoose 8. Web sockets 9. Microservices 10. Routing and request handling in Nest.js 11. OpenAPI (Swagger) Specification 12. Command Query Responsibility Separation (CQRS) 13. Architecture 14. Testing 15. Server-side Rendering with Angular Universal

WebSockets

WebSockets are another way to connect to and send/receive data from a server. With WebSockets, a client will connect to the server and then subscribe to certain channels. The clients can then push data to a subscribed channel. The server will receive this data and then broadcast it to every client that is subscribed to that specific channel. This allows multiple clients to all receive real-time updates without having to make API calls manually, potentially flooding the server with GET requests. Most chat apps use WebSockets to allow for real-time communication, and everyone in a group message will receive the message as soon as one of the other members sends one. Websockets allow for more of a streaming approach to data transfer than traditional Request-Response API’s, because Websockets broadcast data as it’s received.

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