次の10年のためにElixirをハックする

by Koutarou Chikuba

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࣍ͷ10೥ͷҝʹElixirΛϋοΫ͢ Δ mizchi @Shibuya.ex #1

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About ☞ ήʔϜձࣾ → ڭҭܥϕϯνϟʔ → Increments Inc(Qiita) ☞ JavaScript(Frontend/Node.js) / ͪΐͬͱRuby ☞ Kobito for Windows ϝΠϯ։ൃऀ ☞ ֶੜ࣌୅ʹҰਓͰMMOΈ͍ͨͳͷ࡞ͬͯͨ

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@mizchiͷڵຯ ☞ WebSocket౳ͷϦΞϧλΠϜॲཧʹڵຯ ☞ Erlang/Elixir͋Μ·ΓษڧͰ͖ͯͳ͍ ☞ ٕज़తʹத਎͕͋Δ࿩͸͠ͳ͍(Ͱ͖ͳ͍)

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ElixirͰҰൃ౰͍ͯͨ

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Elixir͸Ͳ͏͍͏ݴޠ͔ ☞ จ๏͸RubyͰத਎͸Erlang ☞ ৄ͘͠͸@naoya͞Μ͕ޠͬͯ͘ΕΔ(ͨ)Ͱ͠ΐ͏

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͸͡Ίʹ

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ੜଘઓུ ☞ ڈ೥ɺͲ͏ʹ͔ͯ͠࢓ࣄͰReact.jsΛ࢖͍͔ͨͬͨ ☞ React঺հهࣄΛॻ͖·ͬͨ͘ ☞ ΈΜͳགྷΕʙʙʙ

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੒ޭͨ͠

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ࠓ೥ ☞ Elixir? ☞ ϦΞϧλΠϜ΢Σϒͳ؍఺͔ΒElixir / Phoenix ʹ͍ͭͯ - Qiita Λॻ͍ͨ ☞ ʮnaoya͞Μ, elixir·͍͍͢͡Αʂ΍Γ·͠ΐ͏Αʂʯͬͯݴ͍ ·ͬͨ͘ΒWeb+DbͰ࿈ࡌ࢝·ͬͨ

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Ͱ΋·ͩϙςϯγϟϧʹ֬ূ͕ ͳ͍

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ࠓ೔Զʹ֬ূΛ͘Ε!!

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ࣗ෼ͱElixirͷग़ձ͍ ☞ ౰࣌ͷಉ྅ͷ@udzura ͞Μʹ༠ΘΕͯୈҰճshinjuku.ex ʹࢀ Ճ ☞ http://d.hatena.ne.jp/mizchi/20120312/1331566107 ☞ StrangeLoop2014(ήςϞϊݴޠͷࡇయ)ͰଘࡏΛࢥ͍ग़͢ ☞ "Elixir and the Internet of Things" by Doug Rohrer - YouTube ☞ ͳΜ͔1.0ग़ͯͨ ☞ Elixir v1.0 released - Elixir

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੝Γ্͕ͬͯΔʁ ☞ HackerNewsํ໘Ͱݴٴ͕͍͢͝૿͑ͨ ☞ Ұൃ౰ͯͦ͏ͳؾ഑

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ٱ͠ͿΓʹ৮ͬͯΈΔ ☞ γϯλοΫε͸(ද໘తʹ͸)͋Μ·ΓมΘͬͯͳ͍ ☞ ৽ଔ౰࣌Θ͔Βͳ͔ͬͨErlangͷϝϞϦϞσϧͷੌ͕͞ɺࠓ͸ Θ͔ΔΑ͏ʹͳͬͨ ☞ ੲͳ͔ͬͨmix͍͢͝ศར ☞ mix࠷ߴͰ͸

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͜͜ͰϞμϯͳݴޠΛৼΓฦΔ ☞ ruby / rubygems ☞ node / npm ☞ rust / cargo

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Package Manager Is First Priority? ☞ ྲྀߦͬͯΔLL = ඞͣྑ͍ϑΝʔετͷύοέʔδϚωʔδϟ͕ ͋Δ ☞ Elixir͸ύοέʔδϚωʔδϟ݉Ϗϧυπʔϧͷ׬੒౓Ͱάϯͱ ෑډԼ͖͛ͯͨ ☞ (ࠓ͔Βݴޠ࡞ͬͯҰൃ౰͍ͯͨਓ͸ύοέʔδϚωʔδϟ͔Β ࡞Δͱྑͦ͞͏)

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ϦΞϧλΠϜ΢Σϒ ☞ HTTP2 ☞ WebSocket ☞ WebRTC

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WebSocketΛͱΓ·͘ݱঢ়: Ұੲલ ☞ Socket.IOҰ୒ ☞ Socket.IOͷӢߦ͖͕ո͍࣌͠୅͕͋ͬͨ ☞ 1೥൒͙Β͍ϝϯς͞Εͳ͔ͬͨ ☞ nodeͷӡ༻໘౗ ☞ γϯάϧϧʔϓͷnodeͷରো֐ੑ͸ׂͱ࠷ѱͷ෦ྨ

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WebSocketΛͱΓ·͘ݱঢ়: ࠷ۙ ☞ WebSocketରԠϒϥ΢β͕૿͑ͨ ☞ ϑΥʔϧόοΫͷॏཁ౓ͷݮগ ☞ PaaSʹΑΔఏڙ ☞ Pusher ☞ Firebase

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PaaSΛ࢖ͬͨݱ࣮ ՝ۚϓϥϯͰ༻్੍͕ݶ͞ΕΔ

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ୡ੒͍ͨ͠ ☞ ࣗલͰ௿ϨΠςϯγͰରো֐ੑ͕ߴ͍(Web)Socket αʔόʔͷ ߏங͕؆୯ʹͳͬͯ΄͍͠ ☞ ͍ͭͰʹ Rails ͱ͔΋౗͍ͨ͠

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ະདྷ? ☞ Ruby: rails/activecable ☞ Elixir: Phoenix/Channel

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ϞμϯͳWAFʹٻΊΒΕΔ΋ͷ

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ϞμϯͳHTML/SPAͷ෩ை ☞ ΋͏ೝূͱJSON API͚ͩͰΑ͘Ͷʁ ☞ Ή͠Ζଞͷػೳ͸अຐ ☞ Google ͕ΫϩʔϧؤுΔ or ΤϯδχΞ͕SSRؤுΕ͹ΫϥΠΞ ϯτ/αʔόʔͰςϯϓϨʔτ୯ҰԽ͸Մೳ ☞ ςϯϓϨʔτʹ͍ͭͯγʔϜϨεͳ౷߹Λ੒͠਱͛Ε͹ ͘͢͝ ͔͍͍ͬ͜ ؾ͕͢Δ

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react-phoenix ☞ Λͭ͘Ζ͏ͱͨ͠ ☞ react-railsͷίʔυಡΜͰଞͷ؀ڥͰ΋࣮ݱͰ͖ͦ͏ͱ͍͏͜ͱ ͕Θ͔ͬͨ ☞ WIP

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ʮ͋ͱ͸ͭ͘Δ͚ͩʂʯ {:ok, vm} = :erlang_v8.start_vm(file:"node_modules/react/dist/react.min.js") {:ok, ret}:erlang_v8.eval vm, "React.renderToString(React.createElement('div', {})) # "

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Elixir΁ͷෆຬ ☞ 2015೥ʹ͍·͞Βܕ͕ͳ͍ݴޠΛֶͿͳΜͯײ ☞ ύλʔϯϚονͰ͋Δఔ౓ϨίʔυΛ໌ࣔͰ͖Δ ☞ dialyzer Λ࢖͏ / ref. ੩తܕνΣοΫπʔϧDialyzerΛElixir ͔Β࢖͏ - Qiita ☞ Ҿ਺͕ҧ͏ɺ౳ͷ͋Δఔ౓ࣗ໌ͳ΋ͷ͸࣮ߦલʹ஄͍ͯΔ

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dializerͷྫ defmodule Simple do @type atom_list :: list(atom) @spec count_atoms(atom_list) :: non_neg_integer def count_atoms(list) do # ... end end

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Elixirʹղܾͯ͠ཉ͍͠໰୊ ☞ ϦΞϧλΠϜ΢Σϒ͸௨৴ස౓͕ߴ͍ ☞ σουϙΠϯτΛ౿ΉՄೳੑ͕ߴ͍ => Let it crash ͨ͠͞ ☞ খ͞ͳύέοτɾϓϩηε͕େྔʹඈͼަ͏ ☞ GCηϯγςΟϒ => ErlangVMͰղܾ͍ͨ͠

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ຊԻ ☞ ͭ·Βͳ͍ݴޠͰফ໣ͨ͘͠ͳ͍ ☞ ElixirΈ͍ͨͳ໘നػೳੵΜͩݴޠྲྀߦͬͯ͘Ε

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ׂΓ੾Γ ☞ Erlang ͸ ݁ہ Network DSL ݴޠͱׂͯ͠Γ੾ͬͨํ͕ྑ͍(by @volutans) ☞ ಘҙͳ͜ͱ͸ѹ౗తʹಘҙ͕ͩͦΕҎ֎͸ผʹ… ☞ CPUϔϰΟͳϓϩάϥϜ͕ૣ͘ͳΔΘ͚Ͱ͸ͳ͍