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Node Cookbook: Second Edition

You're reading from   Node Cookbook: Second Edition Transferring your JavaScript skills to server-side programming is simplified with this comprehensive cookbook. Each chapter focuses on a different aspect of Node, featuring recipes supported with lots of illustrations, tips, and hints.

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Product type Paperback
Published in Apr 2014
Publisher Packt
ISBN-13 9781783280438
Length 378 pages
Edition Edition
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Author (1):
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David Mark Clements David Mark Clements
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David Mark Clements
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Table of Contents (18) Chapters Close

Node Cookbook Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Making a Web Server FREE CHAPTER 2. Exploring the HTTP Object 3. Working with Data Serialization 4. Interfacing with Databases 5. Employing Streams 6. Going Real Time 7. Accelerating Development with Express 8. Implementing Security, Encryption, and Authentication 9. Integrating Network Paradigms 10. Writing Your Own Node Modules 11. Taking It Live Index

Accessing the CouchDB changes stream with Cradle


One of CouchDB's most noteworthy features is the _changes API. With it, we can view all the alterations to a database via HTTP.

For instance, to see all the changes made to our quotes database, we can make a GET request to http://localhost:5984/quotes/_changes. Even better, if we want to hook up to a live stream, we need to add the query parameter ?feed=continuous.

Cradle provides an attractive interface to the _changes API, which we'll explore in this recipe.

Getting ready

We'll need a functioning CouchDB database and a way to write to it. We can use the quotes.js example used in Storing data to CouchDB with Cradle, so let's copy that into a new directory and then create a file alongside it named quotes_stream.js.

If we followed the Creating an admin user and Locking all modifying operations to an admin user sections of the previous recipe's There's more… section, we will need to modify the second line of quotes.js in order to continue to insert...

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