Talking head
MountainWest RubyConf 2015

This presentation, by Paul Hinze, is licensed under a Creative Commons Attribution ShareAlike 3.0
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Many of the greatest achievements in the history of computers are based on lies, or rather, the strategic sets of lies we generallly call “abstraction”. Operating systems lie to programs about hardware, multitasking systems lie to users about parallelism, Ruby lies to us about how easy it is to tell a CPU what to do… the list goes on and on. One of the primary “strategic lies” of the internet is the presentation of each service as though it were a discrete, cohesive entity. When we use GitHub, we think of it as just “GitHub”, not a swarm of networked computers. This lie gives us the opportunity to build high availability applications: apps designed to never go down. Let’s take a tour through the amazing stack of tools that helps us construct high availability applications. We’ll review some of the incredible technology underlying the internet: things like TCP, BGP, and DNS. Then we’ll talk about how these primitives combine into useful patterns at the application level. I hope you’ll leave with not only a renewed appreciation for the core innovations of the internet, but also some practical working knowledge of how to go about building and running a zero-downtime application.

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