ソフトウェア開発における「設計」と「パフォーマンス」の相互作用 / Interaction Between Design and Performance on Software Development

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ιϑτ΢ΣΞ։ൃʹ͓͚Δ ʮઃܭʯͱʮύϑΥʔϚϯεʯͷ૬ޓ࡞༻ Interaction Between Design and Performance on  Software Development ઃܭNight2018 @moznion

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@moznion Software Engineer ࠷ۙαϒςΫʹೖΓ·ͨ͠

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DISCLAIMER

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۩ମతͳιϑτ΢ΣΞઃܭٕ๏ɾख๏ͷ  ࿩୊͸ଞͷൃදʹৡΓ·͢

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ʮઃܭʯͱʮύϑΥʔϚϯεʯ

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ύϑΥʔϚϯεͷఆٛ (؆ܿʹ) - ߴ଎ʹϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ͨ͘͞ΜϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ʮਖ਼֬ʹʯ

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ύϑΥʔϚϯεͷఆٛ (؆ܿʹ) - ߴ଎ʹϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ͨ͘͞ΜϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ʮਖ਼֬ʹʯ

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ύϑΥʔϚϯεͷఆٛ (؆ܿʹ) - ߴ଎ʹϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ͨ͘͞ΜϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ʮਖ਼֬ʹʯ

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ύϑΥʔϚϯεͷఆٛ (؆ܿʹ) - ߴ଎ʹϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ͨ͘͞ΜϨεϙϯεΛฦ͢͜ͱ͕Ͱ͖Δ - ʮਖ਼֬ʹʯ

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ͳͥύϑΥʔϚϯεΛ௥ٻ͢Δͷ͔

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- ྑ͍Πϯλʔωοτମݧͷఏڙ - ΑΓଟ͍ʮػձʯͷ૑ग़ - Πϯϑϥઃඋͷ࠷దԽ - ==> ͭ·Γθχ΍ʂʂʂʂʂʂ ͳͥύϑΥʔϚϯεΛ௥ٻ͢Δͷ͔

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- ྑ͍Πϯλʔωοτମݧͷఏڙ - ΑΓଟ͍ʮػձʯͷ૑ग़ - Πϯϑϥઃඋͷ࠷దԽ - => ͭ·Γθχ΍ʂʂʂʂʂʂ ͳͥύϑΥʔϚϯεΛ௥ٻ͢Δͷ͔

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ͭ·Γθχ΍ʂʂʂʂʂ

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ύϑΥʔϚϯεͤ͞΍͍͢ઃܭʁ

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- ΞϧΰϦζϜ - σʔλߏ଄ - (ϋʔυ΢ΣΞ) ύϑΥʔϚϯεͤ͞΍͍͢ઃܭ (Ұྫ) - ϑΝϯΞ΢τ - ΩϡʔΠϯά - Ωϟογϡ ɹ- όον ਨ௚ࢦ޲ ਫฏࢦ޲ ͦͷଞ

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ਨ௚ࢦ޲ͷઃܭ

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- ద੾ͳΞϧΰϦζϜͷద༻ - ద੾ͳσʔλߏ଄ͷద༻ - සग़) ୳ࡧɼιʔτͳͲ - ͳΜͰ΋͔ΜͰ΋ϋϯϚʔΛ࢖ͬͯ͸ͩΊ ਨ௚ࢦ޲ͷઃܭ

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- ΞϧΰϦζϜ΍σʔλߏ଄͸খ͍͞ύʔπ - ଞͷઃܭख๏ͱͷ૊Έ߹Θ͕ͤൺֱత༰қ - => ੹຿͕໌֬Ͱ͋Δ͜ͱʹڌΓͦ͏ - ࠜຊతͳύϑΥʔϚϯεվળΛਤΔͳΒ͜͜ʂ ਨ௚ࢦ޲ͷઃܭ

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- ʮҰ൪͍͍ϚγϯΛཔΉʯ - ϋʔυ΢ΣΞઃܭͷਐาʹཔΔʂʂʂ - ࠓճͷ࿩୊ͱ͸Ұ੾ؔ܎ͳ͍Ͱ͢ - ͱ͸͍͑ϋʔυ΢ΣΞͷਐาʹΑͬͯ  ιϑτ΢ΣΞઃܭͷٕ๏͕มΘΔ͜ͱ͸͋Γͦ͏ ਨ௚ࢦ޲ͷઃܭ (൪֎)

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ਫฏࢦ޲ͷઃܭ

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- ϑΝϯΞ΢τ - ෳ਺ͷϓϩηεɾϚγϯͰฒߦॲཧ - ෳ਺ͷϓϩηεɾϚγϯͰฒྻॲཧ (ڠௐॲཧ) - (Reactive...?) - ϑΝϯΠϯ͕ཁΔ (৔߹͕͋Δ) ਫฏࢦ޲ͷઃܭ

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- ΩϡʔΠϯά - δϣϒΩϡʔͰޙճ͠େ࡞ઓ (™@nekokak) - ཁ͸όοϑΝϨΠϠʔʹॲཧΛ٧ΊࠐΉ - ϫʔΧʔ (૬౰) ͕ॲཧΛ੥͚ෛ͏ - εϩοτϦϯά͕͠΍͍͢ ਫฏࢦ޲ͷઃܭ queue (buffer)

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- ΩϡʔΠϯά - ҎԼΛຬ଍͢Δ؀ڥͰ͋Ε͹ຊ౰ʹޮՌత - ϦΞϧλΠϜੑ͕ٻΊΒΕͳ͍ - ஗Ԇ͕ڐ༰͞ΕΔ ਫฏࢦ޲ͷઃܭ queue (buffer)

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- (ଟ͘ͷ৔߹) ඇಉظॲཧ͔Βಀ͛ΒΕͳ͍ - ඇಉظॲཧ͕ϏδωεϩδοΫʹ  ͢ΜͳΓ࣮૷͞ΕΔ͜ͱ͸ͦ͏ଟ͘͸ͳ͍ - ϓϩτίϧελοΫͷ࣮૷౳Ͱ͸͋Δ͔΋ ਫฏࢦ޲ͷઃܭ

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- ඇಉظͰ΋ಈ͘Α͏ʹ࣮૷͢Δඞཁ͕ग़ͯ͘Δ - ྫ - ॱংੑʹڍಈΛࢧ഑͞Εͳ͍ - ႈ౳ੑΛ୲อ࣮ͯ͠૷͢Δ - ௚ײʹ൓͢Δ৔߹͕ଟ͍…… ਫฏࢦ޲ͷઃܭ

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- ύϑΥʔϚϯεͷͨΊͷ౎߹͕ϏδωευϝΠϯͷ  ઃܭΛ࿪Ί͕ͪ - ஫ҙਂ͘ઃܭ͢Δͱ͏·͘ಇ͘৔߹΋͋Δ (ޙड़) - (ʮӡ͕ྑ͚Ε͹ʯ͔΋͠Εͳ͍) - ͏͔ͬΓૉ๿ʹ࣮૷͢Δͱ……ᄾݺ ਫฏࢦ޲ͷઃܭ

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- ࡶଟͳۤ͠ΈΛݺͼ͕ͪ - ϨʔείϯσΟγϣϯ - ϦτϥΠ - εςʔτͷෆ੔߹ - ͳͲͳͲ…… - Ref: ෼ࢄΩϡʔͱ͍͏໊ͷۤ͠Έ - Software Transactional Memo  http://kumagi.hatenablog.com/entry/queue_struggle ਫฏࢦ޲ͷઃܭ

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- εέʔϧ͢Δʢ͠΍͍͢ʣʂʂ - ͔͠͠τϨʔυΦϑ͸ଟ͍ - ͦΕͰ΋ಋೖ͢Δ͔Ͳ͏͔ͷίετ൑அʢޙड़ʣ ਫฏࢦ޲ͷઃܭ

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- FaaSʹΑΔύϥμΠϜͷมԽ - ԋࢉϦιʔεΛΦϯσϚϯυͰ҆͘࢖͑ΔΑ͏ʹͳͬͨ - FunctionʹॲཧΛҕৡͯ͠͠·͏ - Firebaseͱ͔Ͱׂͱਪ঑͞ΕΔख๏ - ʮͱΓ͋͑ͣδϣϒΩϡʔʹೖΕ͓͍ͯͯ͋ͱͰॲཧʯ - ΊͬͪΌ΍Γ΍͘͢ͳͬͨ - ୯Ұ੹೚ͷݪଇ (SRP) ͕ൺֱతຬͨ͞Ε΍͘͢ͳͬͨҹ৅ - (ίϯϙʔωϯτͷϝϯςίετ΋Լ͕Δ) ਫฏࢦ޲ͷઃܭ (൪֎?)

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SONOTA

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- όον - ͋Β͔͡ΊίϯςϯπΛ΋Γ΋Γੜ੒  ͓͍ͯͯ͠ΞϓϦ͸ͦΕΛฦ٫͢Δ͚ͩͱ͔ - αϚϦςʔϒϧͱ͔…… - ͜Ε΋ଈ࣌ੑͱͷ݉Ͷ߹͍ͷ࿩୊ʹͳΔ ͦͷଞ

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- Ωϟογϡ - खͬऔΓૣ͍ͥʢةݥࢥ૝ʣ - YAPC::Kansai 2017 OSAKAͰ࿩͠·ͨ͠ - https://speakerdeck.com/moznion/pattern-and-strategy-of- web-application-caching - (↑Ͱ࿩͍ͯ͠ͳ͍࿩୊ͱͯ͠͸ϚςϏϡʔ͕͋Γͦ͏) ͦͷଞ

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- Ωϟογϡ΍όον͸ຊ࣭త͔Ͳ͏͔ - ଟ͘ͷ৔߹͸ຊ࣭తͰ͸ͳ͍……ʁ ͦͷଞ

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- ຊ࣭ͱ͸ͳʹ͔……ʁ - => ϏδωευϝΠϯɾϩδοΫͷ៉ྷ͞ - => θχ΍ʂʂʂʂʂʂ ͦͷଞ

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- ຊ࣭ͱ͸ͳʹ͔……ʁ - => ઃܭͷ៉ྷ͞ - => θχ΍ʂʂʂʂʂʂ ͦͷଞ

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- ຊ࣭ͱ͸ͳʹ͔……ʁ - => ઃܭͷ៉ྷ͞  => θχ΍ʂʂʂʂʂʂ ͦͷଞ

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ͭ·Γθχ΍ʂʂʂʂʂ

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- ͔͠͠ - ςΫχΧϧͳ౎߹͕ιϑτ΢ΣΞઃܭʹٴ΅͢Өڹ͸େ͖͍ - ౎߹ ∈ ϋʔυ΢ΣΞɾϛυϧ΢ΣΞ - ςΫχΧϧͳղܾख๏ͷ҆қͳಋೖʹΑͬͯ  ΧΦεʹ޲͔͍ͬͯ͘Մೳੑ͸ߴ·Δ - υϝΠϯͷ࣋ͭϐϡΞ͕ࣦ͞ΘΕΔ - ઃܭ͕࿪ΊΒΕ͕ͪ ͦͷଞ

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ઃܭ͕࿪ΊΒΕΔʁ

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- ઃܭ͕࿪ΊΒΕΔ - => ڍಈ͕Θ͔Γʹ͘͘ͳΔ (ίʔυͷಡΈ΍͚ͩ͢͞Ͱ͸ͳ͍) - => मਖ਼ίετ͕ߴ͘ͳΔ - => ϝϯςίετ͕ߴ͘ͳΔ - => ઃܭ͕࿪ΊΒΕ͍ͯΔ͜ͱʹؾͮ͘…… ઃܭ͕࿪ΊΒΕͯԿ͕ѱ͍ʁ

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ʮίετʯ

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- ৽ͨʹػೳΛ࡞Δίετ - ίʔυͷϝϯςφϯείετ - Πϯϑϥͷϝϯςφϯείετ - => ιϑτ΢ΣΞઃܭ͸͜ΕΒʹӨڹΛٴ΅͢ - => ઃܭ͸ίετͱͷઓ͍ ίετ

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ͭ·Γθχ΍ʂʂʂʂʂ

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- ίετͷ࣠ - ίϯϐϡʔςΟϯάͷ଎౓ʹΑͬͯϖΠ͢ΔྖҬ - ઃܭͷྑ͞ʹΑͬͯϖΠ͢ΔྖҬ - ௚ަ͢Δ৔߹΋͋Ε͹૬৐͢Δ৔߹΋૬൓͢Δ৔߹΋͋Δ - όϥϯε͕ॏཁ - ྑ͍ઃܭͷ৚݅ͷҰͭ: ߹ҙ͕औΕ͍ͯΔ - => ίετͱ΋߹ҙΛऔΔඞཁ͕͋Δ - ʮσϕϩούͷੜ࢈ੑʯʹݶఆͨ͠࿩Ͱ͸ͳ͍ ίετ

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υϝΠϯ஌ࣝͱύϑΥʔϚϯε

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- υϝΠϯʹର͢Δ஌͕ࣝ଍Γͳ͍৔߹ - ݟ౰ҧ͍ͷ࣮૷ɾઃܭΛ͕ͪ͠ - ෆద੾ͳσʔλߏ଄Λ࠾༻ͯ͠͠·ͬͨΓ…… - ྑ͍ύϑΥʔϚϯεʹ͸υϝΠϯʹର͢Δ஌ࣝɾཧղ͕ඞཁ ʮυϝΠϯ஌ࣝͷཧղʯͱύϑΥʔϚϯε

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࣮ࡍͲ͏ઃܭ͢Ε͹ྑ͍ͷ͔……

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΋ͷʹΑΔ

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͋͘·Ͱݸਓͷܦݧͷ࿩ͱͯ͠ฉ͍͍ͯͩ͘͞

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- ૉ௚ʹϞσϦϯάͯ͠࡞ͬͨ΄͏͕ྑ͍ - ଟ͘ͷ৔߹࣮༻ʹ଱͑͏Δ଎౓Ͱಈ͘ - ͪΌΜͱϞσϦϯά͞Ε͍ͯΔ - ࠷௿ݶৗࣝతͳઃܭɾ࣮૷͕͞Ε͍ͯΕ͹…… - ʮඒ͍͠΋ͷ͸ۭؾ఍߅͕খ͍͞ʯͷਫ਼ਆ - ࣮ࡍͦΜͳ౎߹ྑ͘͸ͳ͍ͷ͕ͩ…… - ࠔͬͨΒͬͪ͜ʹ౗͓ͯ͘͠ ύϑΥʔϚϯεͱઃܭࢦ਑

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- ͔͋͠͠Δ೔ʢϦϦʔεॳ೔͔΋……ʣΛڥʹ໓๢͢Δ͔΋ - ͱ͍͏࣌ʹύϑΥʔϚϯεΛਅ໘໨ʹߟ͑Δ΂͖ - ཱͪฦͬͯʮྑ͍ઃܭʯͱ͸ - ΞδϦςΟ - ॊೈੑ - ྑ͍ઃܭ => ࠷దԽͷ༨஍͕͋Δ͸ͣ ύϑΥʔϚϯεͱઃܭࢦ਑

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ྫ

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௨஌͢ΔϢʔβ͕ଟ͗͢Δέʔε ௨஌Λ࡞ͬͯૹΔ෦෼Ͱ٧·Δ͔΋ʜʜ

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ૉ๿ʹϑΝϯΞ΢τ ௨஌࡞Δ෦෼΋QVTIૹΔ෦෼΋ͦͷ ϓϩηεɾεϨουͰ΍ͬͯ͠·͏

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ߴස౓ͰૹΒΕΔͱ ࢮΜͰ͠·͍·͢ʂ Έ͍ͨͳ৔߹

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όοϑΝʹΩϡʔΠϯά ϫʔΧʔͷ਺ͰεϩοτϦϯά ͍ͭͰʹ431

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࣮͸͜͜ͰڥքΛ෼͚ΔͱεοΩϦ͢Δʁ

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@startuml actor User participant Comment participant WatchingUser participant Queue participant Worker1 participant WorkerN participant Notification participant PushNotificationGateway Worker1 -> Queue : subscribe WorkerN -> Queue : subscribe User -> Comment : postComment Comment -> WatchingUser : fetchWatchingUser Comment -> Comment : buildNotificationBody Comment -> Queue : enqueueNotificationPayload group publishing as async until queue is empty Queue -> Worker1 : publish Worker1 -> Notification : create Notification -> PushNotificationGateway : sendNotification Queue -> WorkerN : publish WorkerN -> Notification : create Notification -> PushNotificationGateway : sendNotification end @enduml

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Notification͝ͱΩϡʔΠϯά͢ΔϞνϕʔγϣϯ - ଈ࣌ੑ͕ͳͯ͘΋Αͦ͞͏ - Comment͸dispatchʹઐ೦Ͱ͖Δ - rate limitͱ͔Λߟ͑Δඞཁ͕ͳ͘ͳΔ - ୯ҰͷίϯϙʔωϯτΛݟͨ࣌ʹγϯϓϧ

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Notification͝ͱΩϡʔΠϯά͢Δݒ೦ - ෦඼͕૿͑Δͱෳࡶੑ͕૿͢ - ϛΫϩͩͱγϯϓϧ͕ͩɼϚΫϩͩͱෳࡶʹͳͬͯͳ͍͔ - Worker͕ʮ୭͔ΒૹΒΕ͖ͯͨδϣϒʯ͔஌͓ͬͯ͘ඞཁ͕  ͋ΔΜ͡Όͳ͍͔ʁ - => ͜Ε͸ΩϡʔΛΘ͚Ε͹ྑ͍ - => ಛఆͷΩϡʔʹ͸ಛఆͷ୯ػೳWorkerΛඥ෇͚Δ - ΩϡʔΛϓϩτίϧͷΑ͏ʹऔΓѻ͏

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΋ͷʹΑΔ (ϘτϧωοΫʹΑΔ) ߟ͍͖͑ͯ·͠ΐ͏

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- ૣ͗͢Δ࠷దԽ͸ࡑͰ͋Δ - ύϑΥʔϚϯεͷ౎߹͸υϝΠϯΛ࿪Ί͕ͪ - ·ͣ͸υϝΠϯʹدΓఴͬͨઃܭ͕ྑ͍ - ʮඒ͍͠΋ͷ͸ۭؾ఍߅͕গͳ͍ʯ - ͔͠͠࠷దԽͷ༨஍Λ࢒͢͜ͱ͸ॏཁ - ʮ࠷దԽͷ༨஍͕͋Δઃܭʯ͕ୈҰஈ֊ͱͯ͠ͷྑ͍ઃܭͰ͸ͳ͍͔ ύϑΥʔϚϯεͱઃܭࢦ਑