send health check data to all redis backends

services/real-time/app.coffee

@@ -133,16 +133,20 @@ if Settings.forceDrainMsDelay?
 if Settings.continualPubsubTraffic
 	console.log "continualPubsubTraffic enabled"
 
-	pubSubClient = redis.createClient(Settings.redis.documentupdater)
+	redisClients = [redis.createClient(Settings.redis.documentupdater), redis.createClient(Settings.redis.realtime)]
 
-	publishJob = (channel, cb)->
+	publishJob = (channel, callback)->
 		checker = new HealthCheckManager(channel)
 		logger.debug {channel:channel}, "sending pub to keep connection alive"
 		json = JSON.stringify({health_check:true, key: checker.id, date: new Date().toString()})
-		pubSubClient.publish channel, json, (err)->
-			if err?
-				logger.err {err, channel}, "error publishing pubsub traffic to redis"
-			cb(err)
+		jobs = _.map redisClients, (rclient)->
+			return (cb)->
+				rclient.publish channel, json, (err)->
+					if err?
+						logger.err {err, channel}, "error publishing pubsub traffic to redis"
+					return cb(err)
+					
+		async.series jobs, callback
 
 	runPubSubTraffic = ->
 		async.map ["applied-ops", "editor-events"], publishJob, (err)->