Reactive manifesto
http://www.reactivemanifesto.org
Amdahl Law
Web evolved
Parallel versus concurrent
Blocking IO
IO versus NIO
Typesafe Console (monitoring reactive applications)
http://www.youtube.com/watch?v=pGZkmL_v1Ns
http://resources.typesafe.com/console/docs/1.2.1/manual/overview.html#monitoring-reactive-applications
Cost of locks
http://lmax-exchange.github.io/disruptor/files/Disruptor-1.0.pdf