エンジニアになる覚悟

by Yosuke Furukawa

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ΤϯδχΞʹͳΔ֮ޛ 2018/06/23 @ ώΧϦΤ Leverages

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Twitter: @yosuke_furukawa Github: yosuke-furukawa

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2018/11/23 - 24 Node ֶԂࡇ։࠵

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ΤϯδχΞʹͳΔ

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https://recruit-tech.co.jp/blog/2017/06/07/bootcamp2017/

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࿨ా୎ਓ͞Μύʔτ ʹ͠ΉͶ͋͞Μύʔτ Զύʔτ ΋Γ΍͞Μύʔτ

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࿨ా୎ਓ͞Μύʔτ ʹ͠ΉͶ͋͞Μύʔτ Զύʔτ क԰͞Μύʔτ ΤϯδχΞͷ৺ߏ͔͑ΒΞϓϦέʔ γϣϯͷத਎·Ͱ஌Δ

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https://speakerdeck.com/rtechkouhou/javascript-bootcamp

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JavaScript Bootcamp Ͱڭ͑ͯ ͍Δ͜ͱ • ϦΫϧʔτςΫϊϩδʔζͷ "ϑϩϯτΤϯυΤϯ δχΞ" ͷఆٛ͸޿ͯ͘ਂ͍ • HTML/CSS/JSΛۦ࢖ͯ͠ΫϥΠΞϯτΛ࡞Δ   *͚ͩͰ͸ͳ͍* • ωοτϫʔΫͷ஌ࣝ΍αʔόͷجૅ஌ࣝ΋༗͢Δ্ ʹͦΕΒΛ౿·͑ͯαΠτશମͷϢʔβϏϦςΟɾ ύϑΥʔϚϯεΛ্͛Δਓ

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ϦΫϧʔτςΫϊϩδʔζͷ ϑϩϯτΤϯυΤϯδχΞ

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HTML CSS JS ΢ΣϒΛߏ੒͢Δݴޠ Backend Language (Java, Go)

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DOM Cookie DevTools ϒϥ΢βΛߏ੒͢Δ಺༰ CSSOM window navigator Headers

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DNS URL HTTP(S) ωοτϫʔΫ WebSocket TCP TLS HTTP/2

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Cache Critical- Rendering Path Metrics Tools ύϑΥʔϚϯε Memory CPU I/O

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XSS CSRF SQL Injection ηΩϡϦςΟ DoS TLS/SSL

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React Angular Redux JS Frameworks Vue.js Polymer

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HTML CSS JS DOM Cookie DevTools CSSOM window navigator Headers DNS URL HTTP(S) WebSocket TCP TLS React Redux Memory CPU I/O DoS TLS/SSL

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େมͰ͢Ͷ

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Ͱ΋ɺ͜Ε͕(ϦΫϧʔτͷ)  ϑϩϯτΤϯυΤϯδχΞ  ʹͳΔɺͱ͍͏͜ͱͰ͢ɻ

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ϑϩϯτ͚ͩͰ͜Ε͚ͩͷ஌ ͕ࣝඞཁɺόοΫΤϯυ΋ؚ ΊΔͱ΄΅ແݶͷ͕࣌ؒඞཁ

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ແݶͷதͰ༗ݶͷॲཧΛ͢Δ ͷʹඞཁͳͷ͸ϚϯύϫʔͰ ղܾ͢ΔͷͰ͸ͳ͘ɺ Ϟνϕʔγϣϯ

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๻ͷ৔߹

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શ෦Λ஌͓ͬͯ͘ඞཁ͸ͳ͍ɺ ͱ͍͏΋ͷͷɺେମ஌ͬͯΔ

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ৄ͘͠ͳ͍΋ͷͰ͋ͬͯ΋ 60%ҐͳΒେମ࿩ͤΔ

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Ͳ͏΍ͬͨΒ͜͏ͳΕΔͷ͔ʁ • ۚݴ

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ٕज़ΛֶͿͷͰ͸ͳ͘ɺٕज़ͷ ֶͼํΛֶͿ • twadaྲྀ: • ࢛൒ظ͝ͱʹٕज़ॻΛಡΉ • खΛಈֶ͔ͯ͠Ϳ • গͳ͘ͱ΋̍ͭ͸৽͍͠ݴޠΛֶͿ • Ξ΢τϓοτΛܧଓతʹߦ͏

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ٕज़ΛֶͿͷͰ͸ͳ͘ɺٕज़ͷ ֶͼํΛֶͿ • twadaྲྀ: • ࢛൒ظ͝ͱʹٕज़ॻΛಡΉ • खΛಈֶ͔ͯ͠Ϳ • গͳ͘ͱ΋̍ͭ͸৽͍͠ݴޠΛֶͿ • Ξ΢τϓοτΛܧଓతʹߦ͏ ๻ͷ৔߹

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ΤϯδχΞͰ৺͕͚Δࣄ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ඇػೳཁ݅ʹͩ͜ΘΖ͏ • ஌ࣝʹ֞ࠜ͸࡞Βͳ͍

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1. ΞϓϦέʔγϣϯΛ࡞Ζ͏

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Create Application /PEFֶԂࡇ ॳࢀՃޙʹҙࣝߴ·ͬͯ࡞੒

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·͊·͊ͷ൓ڹ

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Create Application • ͔ͦ͜Βௐࢠʹ৐ͬͯͨ͘͞Μ࡞੒

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Ұ௨ΓNode.js࢖ͬͯԿ͔࡞ ΕΔΑ͏ʹͳͬͨ

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Create Application • ࡞ͬͨΒ঺հ͠·ͬͨ͘ɻ

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ͳΜͰ͜Μͳ͜ͱ͔ͯͨ͠ʁ

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A. ָ͍͔͠Β

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࡞Δ ͳΜ͔ษڧ͢Δ ൃද͢Δ ϑΟʔυόοΫ ΋Β͏ ͜͏͍͏ϥΠϑαΠΫϧͰ ָ͘͠ͳ͖ͬͯͨɻ

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Կࣄ΋ָ͠Ή͜ͱॏཁ

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ͨͩͨ·ʹ͜Μͳ͜ͱΛݴΘ ΕΔ͜ͱ΋͋Δ

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3FBDUͱ͔7VFKTͱ͔Ұ೥ͰྲྀߦΓഇΓ͕มΘΔ ΋ͷΛ΍Δͷ͸࣌ؒతʹ΋͍ͬͨͳ͍ 3BJMTษڧͯ͠·͢ͱ͔$BLF1)1ษڧͯ͠·͢ͱ ͔ݴ͏ͷ΍ΊΖɺதͰԿͯ͠Δ͔Θ͔͔ͬͯΒ࢖͑ 999͸Φϫίϯɺ:::࢖͑ ;;;ͷ͕͍͍ͧ

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3FBDUͱ͔7VFKTͱ͔Ұ೥ͰྲྀߦΓഇΓ͕มΘΔ ΋ͷΛ΍Δͷ͸࣌ؒతʹ΋͍ͬͨͳ͍ 3BJMTษڧͯ͠·͢ͱ͔$BLF1)1ษڧͯ͠·͢ͱ ͔ݴ͏ͷ΍ΊΖɺதͰԿͯ͠Δ͔Θ͔͔ͬͯΒ࢖͑ 999͸Φϫίϯɺ:::࢖͑ ;;;ͷ͕͍͍ͧ Ұ੾ฉ͔ͳͯ͘ྑ͍

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൷൑Λ͍ͯ͠ΔਓΑΓ΋Կ͔ Λ࡞͍ͬͯΔਓͷ͕ѹ౗తʹ ଚ͍ɺϞνϕʔγϣϯΛམͱ ͢ඞཁ͸ͳ͍

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ݟͨΓฉ͍ͨΓͯ͠ಘͨ஌ࣝ ΑΓ΋ॻ͍ͨΓಈ͔ͨ͠Γ͠ ͯಘͨܦݧͷ͕ੜ͖ͨ৘ใ

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ٕज़ʹ͸ݶΓ͕ͳ͍ɺͲΜͳ ΋ͷʹ΋ϝϦοτͱσϝϦο τ͸͋Δ͠ɺͦΕΒ͸΍ͬͯ Έͳ͍ͱຊ౰͸Θ͔Βͳ͍ɻ

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΍ͬͯΈͯࣗ෼ʹٕ͋ͬͨज़ Λݟ͚͍ͭͯ͘ͷ͕ॏཁ

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2. ඇػೳཁ݅ʹͩ͜ΘΖ͏

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ඇػೳཁ݅ • ηΩϡϦςΟ • XSS/XSRF/DoS etc • ੑೳ • SPA/PWA/AMP etc • ϝϯςφϯαϏϦςΟ • ςετॻ͘/e2e/storyboard etc

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ػೳཁ݅Λຬͨͯ͠ظ೔ʹ௥ ΘΕΔதͰͲ͜·Ͱඇػೳཁ ݅ΛೖΕࠐΊΔ͔ͱ͍͏ͷ͕ ΤϯδχΞͷҰछͷೳྗ

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๻ͷ৔߹

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ύϑΥʔϚϯενϡʔχϯά େ޷͖ͩͬͨ

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ύϑΥʔϚϯενϡʔχϯά • όοΫΤϯυͷσʔλϕʔεͱ͔શจݕࡧ෦ ෼ͷνϡʔχϯά΍ͬͯresponseͷ࣌ؒΛ୹ ͘͢Δͷ͕࢓ࣄͩͬͨɻ

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ύϑΥʔϚϯενϡʔχϯά • όοΫΤϯυͷσʔλϕʔεͱ͔શจݕࡧ෦ ෼ͷνϡʔχϯά΍ͬͯresponseͷ࣌ؒΛ୹ ͘͢Δͷ͕࢓ࣄͩͬͨɻ ͕͜͜Զͷઓ͏৔ॴ

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Ͱ΋

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ରԠϒϥ΢βΛ IE => Chrome ʹ֦େͨ͠ͱ͖ͷ͜ͱ

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ര଎ʹͳͬͨ

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ϑϩϯτΤϯυͷٕज़͕ਐา ͢Δͱ๻ͷ΍ͬͯͨ͜ͱ͸ޡ ࠩʹมΘ͍ͬͯͬͨɻɻɻ

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ඇػೳཁ݅Ͱੜ͖͍ͯͨࣗ෼ ͕ॳΊͯܦݧͨ͠িܸ

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࣮ࡍʹ͸UXΛ࠷ߴʹ͢ΔͳΒ ϑϩϯτ͔ΒόοΫΤϯυ· Ͱશ෦ࣝΔඞཁ͕͋ΔΜͩͱ ஌ͬͨ

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ϦΫΤετ͔ΒϨεϙϯε·ͰͰ͸ͳ͘ɺϖʔδ͕ಡΈ ࠐ·Ε࢝Ί͔ͯΒϢʔβʔͷظ଴ΛಘΔ·Ͱɻ

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͔ͦ͜ΒϑϩϯτΤϯυʹڵຯ Λ࣋ͬͨ • Node.js͸JavaScriptֶ΅͏ͱͯ͠΍ͬͯͨΒ ָ͘͠ͳͬͯ΍ͬͯͨ • ϑϩϯτͰͳΜ͔ΞϓϦ΋࡞͍͕ͬͯͨɺ࣮ ࡍʹ͸స৬ͯ͠ػձΛ࡞࣮ͬͯࢪͨ͠ • ਺೥͔͚ͯɺͰ͖ΔΑ͏ʹͳͬͨ

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ඇػೳཁ݅ʹͩ͜ΘΖ͏ɻ

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ඇػೳཁ݅ʹͩ͜ΘΔͱجૅ ͷ͜ͱΛ஌Δඞཁ͕ग़ͯ͘Δ

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ඇػೳཁ݅ • ੑೳ  => ϒϥ΢βͷதͷಈ͖ɺCPUɺmemoryɺωοτϫʔΫɺ ΞϧΰϦζϜ etc etc • ηΩϡϦςΟ  => OS, middlewareͷதͷಈ͖ɺCPU, memory, etc etc • ϝϯςφϯαϏϦςΟ  => ઃܭ࿦ɺݴޠ࢓༷ɺςετɺΞʔΩςΫνϟɺ etc etc

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ඇػೳཁ݅ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ͦͷޙͰඇػೳཁ݅ʹ΋ͩ͜ΘΖ͏ • ͦ͏͢ΔͱجૅͱԠ༻ͷ྆ํʹৄ͍͠ਓʹͳ ΕΔ

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3. ஌ࣝʹ֞ࠜΛ࡞Βͳ͍

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஌ࣝʹ֞ࠜΛ࡞Βͳ͍ • Dev / Ops Ͱ͸ͳ͘  Dev Ops • Engineer / Designer Ͱ͸ͳ͘   Engineer Designer • Backend / Frontend Ͱ͸ͳ͘  Backend Frontend

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஌ࣝʹ֞ࠜΛ࡞Βͳ͍ • ཧ૝͸IࣈܕΑΓ΋Tࣈܕ • Ұݸ࣠Λ࡞͔ͬͯͦ͜Β޿͛Δ

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஌ࣝʹ֞ࠜΛ࡞Βͳ͍ • Tࣈܕͷਓ͕૿΍͍͖͍ͯͨ͠ɻ • զʑͷֶͿ͜ͱ͸ଟ͍ɺͰ΋Tࣈܕͷਓ͕૿͑Ε͹ͦͷ෼ΧόʔͰ ͖Δɻ Designer FE BE

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๻ͷ৔߹

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ׂͱͳΜͰ΋޷͖ • Πϯϑϥ΋޷͖ • όοΫΤϯυ΋޷͖ • ϓϩάϥϛϯάݴޠͦͷ΋ͷ΋޷͖ • ϓϩμΫτΛߏங͢Δͷ΋޷͖ • σβΠϯܥͷπʔϧ΋ษڧͯ͠Δ

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ׂͱͳΜͰ΋޷͖ • Πϯϑϥ΋޷͖ • όοΫΤϯυ΋޷͖ • ϓϩάϥϛϯάݴޠͦͷ΋ͷ΋޷͖ • ϓϩμΫτΛߏங͢Δͷ΋޷͖ • σβΠϯܥͷπʔϧ΋ษڧͯ͠Δ ͳΜͰ΋஌Δඞཁ͸ͳ͍ɺͰ΋  ޷ح৺ʹ֞ࠜ͸࡞ͬͯ΄͘͠ͳ͍ɻ

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஌ࣝʹ֞ࠜΛ࡞Βͳ͍

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஌ࣝʹ֞ࠜΛ࡞Βͳ͍ • ͪ͸΍;Δ 13 ר    ࡩ୔ ਯʮ͜ΕͱܾΊͨಓͰ஌Βͳͯ͘ ྑ͍͜ͱͳΜ͔̍ͭ΋ͳ͍ΘΑʯ

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֮ޛΛ࣋ͱ͏ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ඇػೳཁ݅ʹͩ͜ΘΖ͏ • ஌ࣝΛᩦཉʹ࣋ͬͯௐ΂Α͏ • ͜ΕΛܧଓతʹ΍Γଓ͚Α͏

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֮ޛΛ࣋ͱ͏ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ඇػೳཁ݅ʹͩ͜ΘΖ͏ • ஌ࣝΛᩦཉʹ࣋ͬͯௐ΂Α͏ • ͜ΕΒΛܧଓతʹ΍Γଓ͚Α͏ ྑ͍ΤϯδχΞʹͳΔͷʹۙಓͳΜ ͔ແ͍͠ɺ֮ޛΛ࣋ͭඞཁ͕͋Δ

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·ͱΊ

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·ͱΊ • ϑϩϯτΤϯυΤϯδχΞ͸ͨͩը໘Λ࡞Δ͚ͩͷਓ͡Όͳ ͍ • αΠτશମͷϢʔβϏϦςΟɾύϑΥʔϚϯεΛߟ͑Δਓ • ৺͕͚ͯ΄͍͜͠ͱ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ඇػೳཁ݅ʹͩ͜ΘΖ͏ • ஌ࣝʹ֞ࠜΛ࡞Βͳ͍Α͏ʹ͠Α͏

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·ͱΊ • ϑϩϯτΤϯυΤϯδχΞ͸ͨͩը໘Λ࡞Δ͚ͩͷਓ͡Όͳ ͍ • αΠτશମͷϢʔβϏϦςΟɾύϑΥʔϚϯεΛߟ͑Δਓ • ৺͕͚ͯ΄͍͜͠ͱ • ΞϓϦέʔγϣϯΛ࡞Ζ͏ • ඇػೳཁ݅ʹͩ͜ΘΖ͏ • ஌ࣝʹ֞ࠜΛ࡞Βͳ͍Α͏ʹ͠Α͏ ͜ΕͱܾΊͨಓͰ஌Βͳͯ͘  ྑ͍͜ͱͳΜ͔̍ͭ΋ͳ͍

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Thank You!!!