Presentation from the ElixirConf US 2018. Reflections on what makes Elixir special after 3 years of using it.
mkaszubowski94
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mkaszubowski94Our three yearswith ElixirMaciej Kaszubowski
mkaszubowski94August 12th, 2015
mkaszubowski94%{"cowboy": {:hex, :cowboy, "1.0.2"},"cowlib": {:hex, :cowlib, "1.0.1"},"decimal": {:hex, :decimal, "1.1.0"},"ecto": {:hex, :ecto, "0.15.0"},"fs": {:hex, :fs, "0.9.2"},"phoenix": {:hex, :phoenix, "0.16.1"},"phoenix_ecto": {:hex, :phoenix_ecto, "0.9.0"},"phoenix_html": {:hex, :phoenix_html, "2.1.0"},"phoenix_live_reload": {:hex, :phoenix_live_reload, "0.6.0"},"plug": {:hex, :plug, "0.14.0"},"poison": {:hex, :poison, "1.4.0"},"poolboy": {:hex, :poolboy, "1.5.1"},"postgrex": {:hex, :postgrex, "0.9.1"},"ranch": {:hex, :ranch, "1.1.0"}}
mkaszubowski94September 6th, 2018
mkaszubowski94Elixir 1.0.5 1.6.1Erlang/OTP 17 21Phoenix 0.16.1 1.3.4Ecto 0.15.0 2.2.7
mkaszubowski942+ years in production
mkaszubowski9470_000+ Lines of Code
mkaszubowski94Happy Developers
mkaszubowski94What made us staywith ElixirMaciej Kaszubowski
mkaszubowski94Functional programmingMassive concurrencyDistributionFault toleranceOTP
mkaszubowski94“The Rails Way”
mkaszubowski94www.youtube.com/watch?v=lDKCSheBc-8
mkaszubowski94We’re not buildingPhoenix applications
mkaszubowski94ViewController Model
mkaszubowski94AppWeb interface
mkaszubowski94Web interface
mkaszubowski94Phoenix Contexts
mkaszubowski94Concurrency
mkaszubowski94Massive Concurrency
mkaszubowski94“We do not have one web-serverhandling 2 millions sessions. We have2 million webservers handling onesession each.”Joe Armstrong
mkaszubowski94Behaviour, fault toleranceand performance becomeseparate concerns
mkaszubowski94www.youtube.com/watch?v=5SbWapbXhKo
mkaszubowski94What has changed?
mkaszubowski94Not much, really…
mkaszubowski94We’ve learned moreabout Elixir
mkaszubowski94But mostly, we’velearned more aboutsoftware engineering
mkaszubowski94But mostly, we’velearned more aboutour domain logic
mkaszubowski94Elixir is transparent
mkaszubowski94Disadvantages
mkaszubowski94Intensive computations?Machine learning?Hard real-time systems?
mkaszubowski94Massive concurrencyDistributionFault toleranceOTP
mkaszubowski94Having great tools canmake us ignorant
mkaszubowski94AWS Lambda
mkaszubowski94Distributed DataPersistent ActorsCluster ShardingStreaming
mkaszubowski94Full isolationNo shared memoryCommunication through eventsActivities scheduled by the runtimeAWS Lambda
mkaszubowski94“It is not once, nor twice, but timeswithout number that the same ideamakes its appearance in the world.”Aristotle
mkaszubowski94Software ArchitectureDomain Driven DesignDistributed SystemsAlgorithms / Data StructuresDesign Patterns (!) / OO
mkaszubowski94“Just modules and functions…”
mkaszubowski94We’re not buildingElixir applications
mkaszubowski94Let’s not become“Elixir Developers”
mkaszubowski94Thanks!Maciej Kaszubowski
mkaszubowski94• http://haskell-distributed.github.io (Cloud Haskell)• https://dotnet.github.io/orleans/ (Microsoft Orleans)• https://github.com/SpaceTime-IoT/erleans (Orleans for Erlang)• https://doc.akka.io/docs/akka/2.5.4/scala/index.html (Akka)• www.youtube.com/watch?v=5SbWapbXhKo (Solid Ground by Saša Juric)• www.youtube.com/watch?v=lDKCSheBc-8 (Phoenix Is Not Your Applicationby Lance Halvorsen)Links
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