前言：Scala的创始人Martin Odersky，继 Functional Programming Principles in Scala 之后，又在coursera是开了一门课： reactive programming. 这一系列博客，是听课笔记
什么是reactive programmng ? 且翻译做：反射式编程
reactive --- readily response to a stimulus 对刺激做出快速的反应
react to events ----- event driven
react to load ----- scalable
react to failures ----- resilient
react to users ---- responsive
这个课程的内容包括
Review of functional programming
An important class of functional patterns: monads
Functional programs in a stateful world
Abstracting over events: futures
Abstracting over event streams: observables
Message passing architecture: actors
Handling failures: supervisors
Scaling out: distributed actors
有三个人主讲：