Cluster, Threads, MultiThreading NodeJS Socket.io

http://stackoverflow.com/questions/8563401/node-js-multi-threading-and-socket-io


http://goldfirestudios.com/blog/136/Horizontally-Scaling-Node.js-and-WebSockets-with-Redis


https://nodejs.org/api/cluster.html#cluster_cluster_isworker


https://www.sitepoint.com/how-to-create-a-node-js-cluster-for-speeding-up-your-apps/


http://stackoverflow.com/questions/8534462/nodejscluster-how-to-send-data-from-master-to-all-or-single-child-workers


http://blog.carbonfive.com/2014/02/28/taking-advantage-of-multi-processor-environments-in-node-js/


https://nodejs.org/api/child_process.html


https://www.google.es/search?q=cluster+worker+send+to+master&oq=cluster+worker+send+to+master


https://gist.github.com/jpoehls/2232358