jsconf.eu x Node Collaborators Meetup journey

by Yosuke Furukawa

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Node Collaborators Meetup & JSConf.EU 2017/06/28 NodeֶԂ 26

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໘ന͔ͬͨ࿩ 3ͭ঺հ

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1. How to save

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2017೥ݱࡏɺύεϫʔυΛͲ ͏΍ͬͯ҆શʹอଘ͢Δ͔

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ύεϫʔυͲ͏΍ͬͯอଘ͠ ͯ·͔͢ʁ ฏจͰอଘͯ͠ΔΑʔͬͯ ਓʁʁʁ

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ύεϫʔυͲ͏΍ͬͯอଘ͠ ͯ·͔͢ʁ ฏจͰอଘͯ͠ΔΑʔͬͯ ਓʁʁʁ ࢮܐ

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ύεϫʔυͲ͏΍ͬͯอଘ͠ ͯ·͔͢ʁ ͪΌʔΜͱϋογϡԽͯ͠· ͢Αʔʂ md5 Ͱʂʂʂʂ

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ύεϫʔυͲ͏΍ͬͯอଘ͠ ͯ·͔͢ʁ ͪΌʔΜͱϋογϡԽͯ͠· ͢Αʔʂ md5 Ͱʂʂʂʂ ࢮܐ

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Ͱ΋ਖ਼௚ʹݴͬͯʁ ͜Ε΍ͬͪΌͬͨ͜ͱ͋Δਓ ͍ͳ͍ʁʁʁ

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๻Ͱ͢Ͷʂʂʂʂʂ (ϗϏʔϓϩδΣΫτ)

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͜ΕΒͷϋογϡؔ਺͸  ύεϫʔυϋογϡͱͯ͠  ;͞Θ͘͠ͳ͍  md5/sha1/sha256

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ύεϫʔυอଘ͢Δ࣌ͷ ϋογϡؔ਺͸ ҉߸తϋογϡؔ਺ͱ ݺ͹ΕΔ΋ͷ  bcrypt/pbkdf2/scrypt

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CDSZQUJTTUJMMTFDVSFJO CVUBSHPOXPOJO1BTTXPSE )BTI$POUFTU

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҉߸తϋογϡؔ਺͸ฒྻ࣮ ߦՄೳͳճ࿏ͰҰؾʹԋࢉ͞ ΕΔͱղಡͰ͖ͪΌ͏͔΋ʁ  (Ex: GPU, FPGA)

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ͦ͜Ͱ Argon2 Password Hash Competition Ͱ༏উͨ͠ϋογϡؔ਺ɺ ݱࡏ࠷ڧ?ͷ͸ͣɻ

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Α͘Θ͔Βͳ͔ͬͨͬͯਓʁ

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҆৺ͯ͠Լ͍͞ʂʂʂ

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OQNJTFDVSFQBTTXPSE ͜Ε͚֮ͩ͑ͯΕ͹͍͍Ͱ͢ʂ

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JavaScript͕Ͳ͏΍ͬͯಈ͍ ͍ͯΔ͔ͱ͍͏࿩

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ͦ΋ͦ΋JavaScriptͬͯͲ͏ಈ ͍ͯΔͷʁ த਎͸C++Ͱbytecodeੜ੒ͯͨ͠Γ͢Δ

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JIT (Hidden Class) 0QUJNJ[BUJPOͱݺͿ

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ͨͩ͠ var obj = { x: 1, y: 2, }; // obj ͷ y propΛফ͢ delete obj.y; // obj ʹ z propΛ଍͢ obj.z = 3; // obj ͷ props Λ֬ೝ͢Δ obj.hasOwnProperties ͜͏͍͏͜ͱ΍Δͱ஗͍

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ͨͩ͠ var obj = { x: 1, y: 2, }; // obj ͷ y propΛফ͢ delete obj.y; // obj ʹ z propΛ଍͢ obj.z = 3; // obj ͷ props Λ֬ೝ͢Δ obj.hasOwnProperties ͜͏͍͏͜ͱ΍Δͱ஗͍ ͜ΕΛ%FPQUJNJ[BUJPOͱݺͿ

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JSͷத਎ͷಈ͖ɹ

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V8͸͜͏

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V8͸͜͏

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DEMO function deopt(obj) { return obj.x; } for (var i = 0; i < 1000000; i++) { deopt({ x: 1, y: 2}); } // deoptimized… deopt({ x: 1, y: 2, z: 3});

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͋ͱ։ൃऀ޲͚ʹ͸͜ͷΦϓγϣ ϯΛ཈͓͑ͯ͘ͱΠφϑ

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OK͜ΕͰɺJSͷίʔυ͸Α Γߴ଎ʹͳΔ͸ͣɻ

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Ͱ΋ɾɾɾ

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ࠓޙ໰୊ʹͳͬͯ͘Δॴ

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Parseॲཧ

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Parseॲཧ

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Parseॲཧ • Parseॲཧͷ໨త͸Ͱ͖Δ͚ͩૣ͘จ๏Τϥʔ Λ఻͑ͯASTʹม׵͢Δ͜ͱ

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Parseॲཧ • v8ͷParser͸࣮͸2ͭ͋Δ • Eager Parser: • ίϯύΠϧ͍ͨ͠શͯͷؔ਺Λύʔε͢ΔͨΊʹ࢖ΘΕΔ • AST ߏங͕ϝΠϯλεΫ • JSͷscopeΛߏங͠ɺESSpecʹԊͬͨશͯͷsyntaxΤϥʔΛݟ͚ͭΔ • Lazy Parser: • ίϯύΠϧͨ͘͠ͳ͍ؔ਺ͷύʔεΛεΩοϓ͢ΔͨΊʹ࢖ΘΕΔ • AST͸ߏங͠ͳ͍ • ൑அՄೳͳsyntaxΤϥʔͷΈݟ͚ͭΔɺESspecʹ͸ඞͣ͠΋ԊΘͳ͍

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Parseॲཧ • ʮॳظஈ֊Ͱ͸ Lazy Parser ʹ࢓ࣄͤͯ͞ޙ൒ʹ Eager Parser ʹ࢓ࣄͤ͞Δʯͱ͍͏উෛ • Lazy Parse ͢Δͷ͔ Eager Parse ͢Δͷ͔͸ V8 ͷؾ ෼࣍ୈͰܾ·Δ΋ͷ͕ଟ͍(Heuristic) • ຊ౰ʹStartup࣌ʹඞཁͳ΋ͷ͚ͩEager Parseͤ͞ ͯɺଞ͸Lazy Parse ͍ͤͨ͞

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Optimize.js • https://github.com/nolanlawson/optimize-js • optimize.js ͸͜ͷ Eager Parse Λແཧ໼ཧ Lazy Parseʹ͢ΔͨΊͷtranspiled optimizer

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Optimize.js ͜Μͳײ͡Ͱແཧ໼ཧ-B[Z 1BSTFͤ͞ΔͨΊͷ ώϯτΛ༩͑Δ

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Α͘Θ͔Βͳ͔ͬͨͬͯਓʁ

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҆৺ͯ͠Լ͍͞ʂʂʂ

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͜Ε͚֮ͩ͑ͯԼ͍͞ʂ Chrome/Node͸ࠓޙ΋ͬͱ ଎͘ͳΔʂ Optimize.js ࢖͏ͱ΋ͬͱ ΋ͬͱ଎͘ͳΔ(͔΋)ʂ

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Node Collaborators Summit

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Node.js ͷίϥϘϨʔλ͕Ұ ಉʹհͯ͠coreͷ࡞ۀΛߦͬ ͨΓɺٞ࿦͢Δ৔ॴ

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http2, promise, stream, etc

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͜Μͳײ͡ͷ੒ՌɺͪͳΈʹIUUQ/PEFશવಈ͔ͳ͍ͷͰɺ ͪΌΜͱಈ͔ͤΔ΋ͷʹ͍͖ͯ͠·͢ ʆŋТŋ ʎ

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·ͱΊ • jsconf.eu࠷ߴͰͨ͠ • ΈΜͳReactͱ͔Angularͱ͔ͦ͏͍͏࿩͸ͯ͠ͳ͍ • Ͳ͔ͬͪͱ͍͏ͱJSͱ͍͏ΩʔϫʔυͷԞʹ͋Δ௿ϨΠϠʔͳ ෦෼ͩͬͨΓɺ΢Σϒ͚ͩͰ͸ͳ͍ผͷ໰୊Λղܾ͍ͯͨ͠Γ • Node Collaborators Meetup΋࠷ߴͰͨ͠ • Node.js http2 ΍͍ͬͯͧ͘ʂʂʂʂʂ