Netflix (s nflx), it seems, is to cloud computing what Google (s goog) and Facebook (s fb) are to distributed systems, generally. Today, Netflix has open sourced its latest technology for keeping its cloud-hosted applications running -- a set of libraries, called Hystrix, that is designed to manage interactions between the myriad services that comprise the company's distributed architecture. If you're building service-oriented architectures in the Amazon Web Services (s amzn) cloud, it might be worth a look.