(Last Updated On: November 25, 2015)
Use open source Spark R to power shiny apps
I am unsure of the performance here of what I offer but Spark is popular
http://blog.sparkiq-labs.com/2015/11/22/using-apache-sparkr-to-power-shiny-applications-part-i/FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!