Scheduling Redis population

The only thing that remains is to create a scheduler that polls our Redis populate script, ./populate.js.

First, let's install a scheduler named node-schedule via NPM:

npm install node-schedule --save

We start by importing node-schedule, which allows us to do cron-like scheduling. We call schedule.scheduleJob every five minutes using */5; however, it will also run as soon as the script starts. We then call populate.run to start population:

var schedule = require('node-schedule')
  , logger = require('./lib/logger')
  , Populate = require('./lib/cache/populate')
  , populate = new Populate();

schedule.scheduleJob('*/5 * * * *', function() {
  populate.run(function(err) {
    if (err) logger.error('Redis Population error', err);
    if (!err) logger.info('Redis Population complete');
  });
});

In order to run the application with real-time updates, open a new terminal and run the following command:

npm start

Now, open another terminal to run the Redis population script...