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Advanced Express Web Application Development

You're reading from   Advanced Express Web Application Development For experienced JavaScript developers this book is all you need to build highly scalable, robust applications using Express. It takes you step by step through the development of a single page application so you learn empirically.

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Product type Paperback
Published in Nov 2013
Publisher Packt
ISBN-13 9781783282494
Length 148 pages
Edition 1st Edition
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Author (1):
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Andrew Keig Andrew Keig
Author Profile Icon Andrew Keig
Andrew Keig
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Table of Contents (14) Chapters Close

Advanced Express Web Application Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Foundations 2. Building a Web API FREE CHAPTER 3. Templating 4. Real-time Communication 5. Security 6. Scaling 7. Production Index

Populating Redis


The ./lib/cache/populate.js script populates a Redis store with new commits/issues using our preceding modules. We will demonstrate scheduling this script later in the chapter. We start by importing the Publisher module, and use util.inherits to extend the Publisher module with a Populate function, giving our Populate module the ability to publish messages.

We then define the Populate function and add a run function, that gets all projects from MongoDB. We use async.each to loop through each project, using the projects user and token to instantiate a GitHubRepo module. We then call git.commits, passing a list of repositories; the response returned is a sorted list of the 10 latest commits. We save the response to Redis using project._id as the key. We then publish the project._id and commits, via the publish function to activate a refresh. We then repeat the whole process for issues.

var async =  require('async')
  , _ =  require('underscore')
  , util = require('util')
 ...
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