Here you go, I wrote this a little while ago: http://tech.hulu.com/blog/2014/04/10/beaconspec/ http://tech.hulu.com/blog/2014/04/10/beaconspec/ The first part

Here you go, I wrote this a little while ago: http://tech.hulu.com/blog/2014/04/10/beaconspec/ http://tech.hulu.com/blog/2014/04/10/beaconspec/ The first part covers MapReduce, the rest you can skip.