redispubsubexample.js

// setup

1. if you want the worker to be in a separate project and separately deployed: heroku create <projectname>
2. if separate project created in step 1: heroku addons:attach <addonname>

// subscriber

var redis = require('redis');
var RedisChannels = require('./constants/redisChannels')

if (process.env.REDIS_URL) {
  var redisSub = redis.createClient(process.env.REDIS_URL)
  var redisPub = redis.createClient(process.env.REDIS_URL)
}
else {
  var redisSub = redis.createClient()
  var redisPub = redis.createClient()
}

redisSub.subscribe(RedisChannels.SmartBotMessage)
redisSub.on('message', onMessage)

function onMessage(channel, data) {
	// make api call etc
	// switch on channel if you have multiple subscriptions
}

// publisher

var redis = require('redis');
var RedisChannels = require('./constants/redisChannels')

if (process.env.REDIS_URL) {
  var redisPub = redis.createClient(process.env.REDIS_URL);
} else {
  var redisPub = redis.createClient();
}

redisPub.publish(RedisChannels.BotMessage, JSON.stringify(data));