everyone node.js - Speaker Deck

Slide 1

Slide 1 text

ΈΜͳͷ node.js node.js ೖ໳ฤ

Slide 2

Slide 2 text

ࣗݾ঺հ ! •GitHubɿogom •Twitterɿ@ogomr

Slide 3

Slide 3 text

͸͡Ίʹ •ΈΜͳͷnode.jsͬͯʁ •node.js ͸ΈΜͳͰ࢖͏ΞϓϦέʔγϣϯʹ  ద͍ͯ͠·͢ɻ •·ͨɺΈΜͳ͕஌͍ͬͯΔ JavaScript ͷ  ݴޠͰهड़͠·͢ɻ ! •͜Ε͔Β node.js Λֶश͢Δํʹ޲͚ͯ  ಛ௃΍࢖͍ॴΛղઆ͠·͢ɻ hello node world!

Slide 4

Slide 4 text

Agenda ! •node.js ͱ͸  •node.js ͷ࢖͍ॴ  •ྲྀߦͱظ଴

Slide 5

Slide 5 text

node.js ͱ͸

Slide 6

Slide 6 text

node.js ͷಛ௃ •Eventide I/O for V8 JavaScript. •node.js ͷެࣜαΠτͷ࢝Ίʹग़͍ͯΔΩʔϫʔυͰ͢ɻ  ͜ͷ Evented I/O ͱ V8 JavaScript ͕ಛ௃Λද͠·͢ɻ ! •Evented I/O •Πϕϯτۦಈͷ࢓૊ΈͰେྔͷೖग़ྗ(I/O)Ͱ΋  ߴ͍ύϑΥʔϚϯεͷΞϓϦέʔγϣϯ͕࡞੒Ͱ͖·͢ɻ •V8 JavaScript •V8 ͸ Google ͷ Chrome ʹ౥ࡌ͞Ε͍ͯΔߴ଎ͳ JavaScript Engine Ͱ͢ɻͦͷ JavaScript ͰαʔόʔαΠυͷΞϓϦέʔγϣ ϯ͕࡞੒Ͱ͖·͢ɻ 

Slide 7

Slide 7 text

node.js ͍͍Ͷʂ •Πϕϯτϧʔϓ͸ߴ౓ͳύϑΥʔϚϯεΛཁٻ͞ΕΔ  ωοτϫʔΫΞϓϦέʔγϣϯʹ࠷దͰ͢ɻ •ฒߦॲཧΛγϯάϧεϨουͰ͢ΔͨΊʹϊϯϒϩοΩϯάI/OͰඇಉظॲཧΛ࣮ݱ͍ͯ͠·͢ɻ  ɹ(node.js ͸ฒߦॲཧʹΠϕϯτϧʔϓͱݺ͹ΕΔϞσϧΛ࠾༻͍ͯ͠·͢ɻ)  •γϯάϧεϨου͸ϝϞϦͷফඅྔ͕গ͘  ϋʔυ΢ΣΞͷίετΛ཈͑·͢ɻ •1ͭͷϓϩηεͰෳ਺ͷϦΫΤετΛѻ͏ͷͰϝϞϦྔ͸ΫϥΠΞϯτ਺ʹൺྫ͠·ͤΜɻ •γϯάϧεϨουͱϊϯϒϩοΩϯI/O͸ JavaScript ͱ૬ੑ͕Α͘  ·ͨɺΫϩʔδϟ͕Πϕϯτۦಈͷ࢓૊ΈͷίʔϧόοΫʹͱͯ΋ศརͰ͢ɻ  •ϑϩϯτΤϯυͷߏஙͰϝδϟʔͳ JavaScript Ͱ  όοΫΤϯυͷॲཧΛߏஙͰ͖·͢ɻ •αʔόʔαΠυJavaScript ͱݴΘΕ͍ͯ·͢ɻ͞ΒʹɺϑϩϯτΤϯυͰख़Ε͍ͯΔ  ΠϕϯτۦಈͷελΠϧ΋όοΫΤϯυͰར༻Ͱ͖·͢ɻ 

Slide 8

Slide 8 text

͝͸Μ͍͖ͨͩ·͢ •ಠ਎ͷஉ͕͝͸Μͷ༻ҙΛ࢝Ί·ͨ͠ɻ •ిࢠϨϯδͰࡢ೔ͷ೑͡Ό͕ΛԹΊ·͢ɻ •ͦͷؒʹΨείϯϩͰ͓౬Λ෸͔͠·͢ɻ •͝൧ΛΑͦͬͯɺ͠͹͠ٳܜŋŋŋ  •͓౬͕ΰϘΰϘͨ͠ͷͰ͓஡ΛೖΕ·͢ɻ •νʔϯͱ໐ͬͨͷͰςʔϒϧͷࡼʹҠͯ͠  Ҝࢠʹ࠲Γ·͢ɻ  •͸͠Λखʹʮ͍͖ͨͩ·͢ʯ  ͋ͬςϨϏ͚ͭͳ͖Όʂ ! •ૣ͘͝͸ΜΛ৯΂͍ͨͷͰ೑͡Ό͕ͱ  ͓஡ͷ༻ҙΛฒߦʹ࡞ۀ͠·͢ɻ •೑͡Ό͕ͷԹΊͱ͓౬͕෸͘ͷ͸ͲͪΒ͕ઌ Ͱ΋Αͯ͘ɺͰ͖ͨํ͔ΒऔΓֻ͔ΕΔͷ͸ خ͍͠Ͱ͢ɻ 

Slide 9

Slide 9 text

ΠϕϯτϧʔϓͱϊϯϒϩοΩϯάI/O •͝͸Μͷ༻ҙͰઆ໌͠·͢ɻ •ಠ਎ͷஉɿΠϕϯτϧʔϓ •ϨϯδͷԹΊɿΠϕϯτϋϯυϥA •νʔϯɿΠϕϯτϋϯυϥAͷίʔϧόοΫ •ίϯϩͰ౬෸͠ɿΠϕϯτϋϯυϥB •ΰϘΰϘɿΠϕϯτϋϯυϥBͷίʔϧόο Ϋ    •Πϕϯτϧʔϓ •Πϕϯτ͕ൃੜͨ͠λΠϛϯάͰ  ίʔϧόοΫͰݺͼग़͞ΕΔ࢓૊Έͷ͜ͱ •ϊϯϒϩοΩϯάI/O •σʔλೖग़ྗ(I/O)͕׬ྃΛ଴ͨͣʹ  ଞͷॲཧΛ։࢝͢Δํࣜͷ͜ͱ ϊϯϒϩοΩϯά ΠϕϯτϋϯυϥA ίʔϧόοΫA ΠϕϯτϋϯυϥB ίʔϧόοΫB ΰϘΰϘ νʔϯ ͓ࡼ΁ ౬ͷΈ΁ ೑͡Ό͕ ϨϯδԹΊ ͓஡ ίϯϩ౬෸͠ Πϕϯτϧʔϓ ϊϯϒϩοΩϯά

Slide 10

Slide 10 text

node.js ͷ࢖͍ॴ

Slide 11

Slide 11 text

Αࣖ͘ʹ͢Δ࿩ •C10K໰୊ •C ͸ clientɺ10K ͸ 10000 Λද͍ͯ͠·͢ɻ •ಉ࣌ʹ઀ଓ͢ΔΫϥΠΞϯτ਺͕ଟ͗͢ΔͱαʔόͷύϑΥʔϚϯε͕େ͖͘௿Լ͢Δ໰୊Ͱ͢ɻ •ϋʔυ΢ΣΞ͕ϘτϧωοΫͰ͸ͳ͘ιϑτ΢ΣΞʹ໰୊͕͋Γ·͢ɻ  •Apache ͱ nginx •Apache ͸εϨουϞσϧͰ͢ɻ •ΫϥΠΞϯτ͔ΒͷϦΫΤετΛॲཧΛ͢Δͷʹ1ͭͷϓϩηε͕ඞཁͰ͢ɻ •ಉ࣌ʹॲཧ͢ΔϦΫΤετͷ਺Λ૿΍͢ͱϓϩηεͷ਺΋૿͑ΔͷͰϝϞϦͷ࢖༻ྔ΋૿Ճ͍͖ͯ͠·͢ɻ  •nginx ͸ΠϕϯτϧʔϓͰ͢ɻ •1ͭͷϓϩηεͰෳ਺ͷϦΫΤετΛѻ͏ͷͰϝϞϦͷ࢖༻ྔ͸΄ͲΜͲ૿Ճ͠·ͤΜɻ      •εϨουϞσϧ͸େྔͷܭࢉॲཧ(CPUό΢ϯυ)ʹ޲͍͍ͯ·͢ɻ •Πϕϯτϧʔϓ͸େྔͷཁٻॲཧ(I/Oό΢ϯυ)ͷωοτϫʔΫ  ΞϓϦέʔγϣϯʹద͍ͯ͠·͢ɻ

Slide 12

Slide 12 text

ωοτϫʔΫΞϓϦέʔγϣϯͷ࢓ࣄ •ϦΫΤετͱϨεϙϯε 1.ϦΫΤετΛड͚·͢ɻɹɹɹɹɹɹɹ→ɹnetwork read 2.σΟεΫ͔ΒίϯςϯπΛಡΈ·͢ɻɹ→ ɹdisk read 3.ϨεϙϯεΛฦ͠·͢ɻɹɹɹɹɹɹɹ→ɹnetwork write  •ωοτϫʔΫ ΞϓϦέʔγϣϯ͸ৗʹԿॲ͔Ͱread/write Λ  ॲཧ͍ͯ͠·͢ɻ •read/write ͸ඞͣ४උ͕ඞཁ͕ͦΕΒશͯϒϩοΫ͢Δͱ  ϦΫΤετ͔ΒϨεϙϯεΛ׬ྃ͢Δ·Ͱʹ͕͔͔࣌ؒΓ·͢ɻ  •node.js ͸ read/write ΛϒϩοΫ͠ͳ͍ɻ •ωοτϫʔΫ ΞϓϦέʔγϣϯͰߴ͍ύϑΥʔϚϯε͕ಘΒΕ·͢ɻ

Slide 13

Slide 13 text

ྲྀߦͱظ଴

Slide 14

Slide 14 text

JavaScript ͷಈ޲ •JavaScript ͷීٴ •JSON •Web্ͷσʔλަ׵ϑΥʔϚοτ͕XML͔ΒJSONʹγϑτ͍ͯ͠·͢ɻ •HTML5 •ωοτϫʔΫ(Web Socket)ɺεϨου(Web Workers)ɺͳͲ •HTML5ͷීٴ͢ΔͱɺJavaScript։ൃऀ͕૿Ճ͢ΔͱݴΘΕ͍ͯ·͢ɻ •υΩϡϝϯτσʔλϕʔε •CouchDB, MongoDB •JavaScriptͰͷΞΫηεΛڧ͘ҙ͍ࣝͯ͠·͢ɻ  • JavaScript ։ൃऀͷ૿Ճ͕༧ଌ͞Ε·͢ɻ •࣮ߦ؀ڥ΍։ൃ؀ڥɾϑϨʔϜϫʔΫ͕੔͑͹ঘߋͰ͢ɻ •ࣄྫ΍αϯϓϧίʔυͷྔ͕ JavaScript ͷར༻Λଅਐ͞Ε·͢ɻ

Slide 15

Slide 15 text

node.js ͷ͜Ε͔Β •node.js Λ࢝ΊΑ͏ •JavaScript ͰϓϩάϥϜΛهड़͢ΔͷͰෑډ͸௿͍Ͱ͢ɻ •socket.ioΛ͸͡ΊศརͳϥΠϒϥϦ͕୔ࢁ͋Γ·͢ɻ •npm registry Ͱެ։͞Ε͍ͯ·͢ɻ •node.js ͷ PaaS ΍ϩά΍σʔλϕʔεͳͲͷ SaaS ͕  ొ৔͓ͯ͠Γ؆୯ʹ࣮ߦ؀ڥ͕खʹೖΓ·͢ɻ  ✤node.js ͕ϓϩάϥϛϯάΛ࢝ΊΔ  ੾ֻ͚ͬʹͳΕ͹Α͍ͳͱࢥ͍ͬͯ·͢ɻ enjoy node!

Slide 16

Slide 16 text

͋Γ͕ͱ͏͍͟͝·ͨ͠