RubyKaigi Hack Space in Tokyo & 函館最速 "予習" 会 / RubyKaigi Hack Space in Tokyo & The Fastest Briefing of RubyKaigi 2026 in Hakodate

3VCZ,BJHJ)BDL4QBDFJO5PLZP വؗ࠷଎༧शձ Ր 3VCZ,BJHJ)BDL4QBDFJO5PLZPവؗ࠷଎༧शձ גࣜձࣾεϚʔτόϯΫ!NP[OJPO ࠷଎༧शձ

4NBSU#BOL *OD 4PGUXBSF&OHJOFFS വؗߴઐग़਎ :"1$)BLPEBUF,FZOPUF4QFBLFS 5BJLJ,BXBLBNJ !NP[OJPO !NP[OJPO !NP[OJPO
࠷଎༧शձ

വؗձ৔Ҋ಺ ࠷଎༧शձ

വؗࢢຽձؗവؗΞϦʔφ ࠷଎༧शձ ˟ɹവؗࢢ౬઒ொ ձ৔ͱ͍͏͜ͱʹͳ͍ͬͯ·͕͢ɺྡ઀ͨ͠ݐ෺ͳͷͰ࣮࣭ࢪઃͱߟ͑ͯྑ͍Ͱ͢ɻ ʮവؗΞϦʔφʯʹ໊લมΘͬͯվங͞Ε͔ͯΒ΄΅ߦͬͨ͜ͱͳ͍ΜͰ͢ΑͶʜʜ ੲ͸ࢢຽମҭؗͱ͍͏໊લͰͨ͠ɻਓੜͰ͸͡Ίͯ"4*"/,6/('6(&/&3"5*0/Λ؍ͨձ৔Ͱ͢ɻ

Ͳ͜ʹ॓Λߏ͑Δ΂͖͔ɺͱ͍͏໰͍ ࠷଎༧शձ ˟ɹവؗࢢ౬઒ொ ͦ͏ɺԹઘ֗Ͱ͢

Ͳ͜ʹ॓Λߏ͑Δ΂͖͔ɺͱ͍͏໰͍ ࠷଎༧शձ w ౬ͷ઒Թઘ w ࣮͸खࠒͳ஋ஈͷྑ͍Թઘ͕॓͋Γ·͢ w ձ৔͕ΊͬͪΌ͍ۙ w
ޒྏֲपล w ҿΉͳΒجຊతʹ͜͜ʹདྷΔ͜ͱʹͳΔ w ޒྏֲެԂपลɺͰ͸ͳ͍͜ͱʹ஫ҙ جຊԿ΋ͳ͍Ͱ͢ w ޒྏֲӺपลɺͰ͸ͳ͍͜ͱʹ஫ҙ ͬͪ͜ͷํ͕Կ΋ͳ͍ w ձ৔͕͍ͦͦۙ͜͜ ࢢిͰʙ෼ఔ౓

Ͳ͜ʹ॓Λߏ͑Δ΂͖͔ɺͱ͍͏໰͍ ࠷଎༧शձ w വؗӺલपล w ͋·Γ͓͢͢Ί͠·ͤΜɺ͋·Γӫ͑ͯͳ͍ʜʜ w ϕΠΤϦΞ΍വؗࢁͳͲͷ؍ޫ஍΁ͷΞΫηε͸ྑ͍ํͰ͢ w
ձ৔͕ͦͦ͜͜ԕ͍ ࢢిͰ෼ऑ w ͦͷଞ w جຊతʹ॓͸ແ͍

Ͳ͜ʹ॓Λߏ͑Δ΂͖͔ɺͱ͍͏໰͍ ࠷଎༧शձ ·͋ࢢిԊ͍ʹ॓Λऔ͓ͬͯ͘ͱྑ͍Ͱ͠ΐ͏ɻ ͔ͤͬͩ͘͠Թઘʹധ·ΒΕͯ͸ʁ

വؗࢢຽձؗവؗΞϦʔφ ࠷଎༧शձ ˟ɹവؗࢢ౬઒ொ ձ৔ͱ͍͏͜ͱʹͳ͍ͬͯ·͕͢ɺྡ઀ͨ͠ݐ෺ͳͷͰ࣮࣭ࢪઃͱߟ͑ͯྑ͍Ͱ͢ɻ ʮവؗΞϦʔφʯʹ໊લมΘͬͯվங͞Ε͔ͯΒ΄΅ߦͬͨ͜ͱͳ͍ΜͰ͢ΑͶʜʜ ੲ͸ࢢຽମҭؗͱ͍͏໊લͰͨ͠ɻ

ؾʹͳΔձ৔पลϏʔϧ৘ใ ࠷଎༧शձ

͸͍ ࠷଎༧शձ

ं͡Όͳ͍ͱͱͯ΋ߦ͚ͳ͍͕ ඒຯ͍വؗͷళ/બ Ր 3VCZ,BJHJ)BDL4QBDFJO5PLZPവؗ࠷଎༧शձ גࣜձࣾεϚʔτόϯΫ!NP[OJPO ࠷଎༧शձ

$PNNJUUFF.JEEMFXBSF3FTQPOTF7BMJEBUJPOͰ 4USFBNJOH3FTQPOTF#PEZΛॲཧ͢Δͱࢗ͞Γ·͢ Ր 3VCZ,BJHJ)BDL4QBDFJO5PLZPവؗ࠷଎༧शձ גࣜձࣾεϚʔτόϯΫ!NP[OJPO ࠷଎༧शձ

࠷଎༧शձ

$PNNJUUFF.JEEMFXBSF3FTQPOTF7BMJEBUJPOͰ 4USFBNJOH3FTQPOTF#PEZΛॲཧ͢Δͱࢗ͞Γ·͢ Ր 3VCZ,BJHJ)BDL4QBDFJO5PLZPവؗ࠷଎༧शձ גࣜձࣾεϚʔτόϯΫ!NP[OJPO ࠷଎༧शձ

4FSWFS4FOU&WFOUT 44& ؆қྫ ࠷଎༧शձ

4FSWFS4FOU&WFOUT 44& ؆қྫ ͕͜͜)5514FTTJPO < HTTP/1.1 200 OK <
cache-control: no-cache, no-transform < content-type: text/event- stream < x-accel-buffering: no < Transfer-Encoding: chunkedd ࠷଎༧शձ

3BDL.JEEMFXBSF͓͞Β͍ ࠷଎༧शձ

3BDL.JEEMFXBSF͓͞Β͍ IUUQTEPDTQZMPOTQSPKFDUPSHQSPKFDUTQZMPOTXFCGSBNFXPSLFOMBUFTUDPODFQUTIUNMXTHJNJEEMFXBSF ࠷଎༧शձ

3BDL.JEEMFXBSF͓͞Β͍ IUUQTEPDTQZMPOTQSPKFDUPSHQSPKFDUTQZMPOTXFCGSBNFXPSLFOMBUFTUDPODFQUTIUNMXTHJNJEEMFXBSF class Something Mi ddleware def initialize(app, options
= {}) @app = app end def call(env) # Do something @app.call(env) end end ࠷଎༧शձ

class Another Mi ddleware ... end 3BDL.JEEMFXBSF͓͞Β͍ IUUQTEPDTQZMPOTQSPKFDUPSHQSPKFDUTQZMPOTXFCGSBNFXPSLFOMBUFTUDPODFQUTIUNMXTHJNJEEMFXBSF class
Something Mi ddleware def initialize(app, options = {}) @app = app end def call(env) # Do something @app.call(env) end end ࠷଎༧शձ

class Another Mi ddleware ... end 3BDL.JEEMFXBSF͓͞Β͍ IUUQTEPDTQZMPOTQSPKFDUPSHQSPKFDUTQZMPOTXFCGSBNFXPSLFOMBUFTUDPODFQUTIUNMXTHJNJEEMFXBSF class
Something Mi ddleware def initialize(app, options = {}) @app = app end def call(env) # Do something @app.call(env) end end ͭ·Γ ͦ΅͘ʹ΍Δͱ SFRSFTͱಉظ͢Δ ࠷଎༧शձ

$PNNJUUFF.3FTQPOTF7BMJEBUJPO ͓͞Β͍ ࠷଎༧शձ

$PNNJUUFF.JEEMFXBSF3FTQPOTF7BMJEBUJPO 5IJTQJFDFPGNJEEMFXBSFWBMJEBUFTUIFDPOUFOUTPGUIF SFTQPOTFSFDFJWFEGSPNVQUIFTUBDLGPSBOZSPVUFUIBU NBUDIFTUIF+40/4DIFNB w ϨεϙϯεϘσΟ͕εΩʔϚʹै͍ͬͯΔ͔Ͳ͏͔Λ νΣοΫͯ͘͠ΕΔ3BDL.JEEMFXBSF
࠷଎༧शձ

$PNNJUUFF.3FTQPOTF7BMJEBUJPOͷ த਎ΛݟͯΈ·͠ΐ͏ SFWDGDGFDDBDBDDEGDBC ࠷଎༧शձ

IUUQTHJUIVCDPNJOUFSBHFOUDPNNJUUFFCMPCDGDGFDDBDBDDEGDBCMJCDPNNJUUFFNJEEMFXBSFSFTQPOTF@WBMJEBUJPOSC ࠷଎༧शձ

IUUQTHJUIVCDPNJOUFSBHFOUDPNNJUUFFCMPCDGDGFDDBDBDDEGDBCMJCDPNNJUUFFTDIFNB@WBMJEBUPSPQFO@BQJ@SC ࠷଎༧शձ

Ξο IUUQTHJUIVCDPNJOUFSBHFOUDPNNJUUFFCMPCDGDGFDDBDBDDEGDBCMJCDPNNJUUFFTDIFNB@WBMJEBUPSPQFO@BQJ@SC ࠷଎༧शձ

ϨεϙϯεಡΈ੾Δ·Ͱ JFηογϣϯ͕ऴΘΔ·Ͱ ϒϩοΫͯ͠͠·͏ʂ ετϦʔϛϯάʹͳΒͳ͍ ࠷଎༧शձ

8PSLBSPVOE ετϦʔϛϯάϨεϙϯεͷΤϯυϙΠϯτΛແࢹ͢Δ class ConditionalCom mi tteeResponseValidator IGNORE_LI S T
= Set[ '/v1/your/sse/endpoint' ].freeze def initialize(app, options = {}) @app = app @ m i ddleware = Com mi ttee: :Mi ddleware : : ResponseValidation.ne w( app, options) end def call(env) # IGNORE_LI S T ʹؚ·ΕΔPATH_INFOͷ৔߹͸Com m i ttee: : M i ddleware : : ResponseValidation ΛεΩοϓ͢Δ return @app.call(env) if IGNORE_LI S T . include?(env['PATH_INFO']) @ m i ddleware.call(env) end end ࠷଎༧शձ

ͳΜͱ͔͍ͨ͠ʜʜ def handle(request) status, headers, response = @app.call(request.env) if
strea m i ng_response?(headers) response = Rack :: BodyProxy.ne w( response) do begin validate(request, status, headers, response) rescue = > e handle_exception(e, request.env) raise e if @raise end end else begin validate(request, status, headers, response) rescue Com m i ttee :: InvalidResponse handle_exception ($ ! , request.env) raise if @raise return @error_class.ne w ( 500, :invalid_response, $ ! . m essage).render unless @ i gnore_error rescue JSON : : ParserError handle_exception ($ ! , request.env) raise Com m i ttee :: InvalidResponse if @raise return @error_class.ne w ( 500, :invalid_response, "Response wasn't valid JSON.").render unless @i gnore_error end end [status, headers, response] end ࠷଎༧शձ

3BDL#PEZ1SPYZΛ࢖͏ͱ͍͏ͷ͸Ͳ͏͔ if strea mi ng_response?(headers) response = Rack ::
BodyProxy.ne w( response) do begin validate(request, status, headers, response) rescue => e handle_exception(e, request.env) raise e if @raise end end else ࠷଎༧शձ

3BDL#PEZ1SPYZΛ࢖͏ͱ͍͏ͷ͸Ͳ͏͔ 1SPYZGPSSFTQPOTFCPEJFTBMMPXJOHDBMMJOHBCMPDLXIFOUIFSFTQPOTF CPEZJTDMPTFE BGUFSUIFSFTQPOTFIBTCFFOGVMMZTFOUUPUIFDMJFOU w Ұఆ͍͚ͦ͏Ͱ͋Δ w ੍ݶͱͯ͠͸ϨεϙϯεΛΠϯλʔηϓτͰ͖ͳ͍
ྫ֎Λ্͛ͯ΋ҟͳΔϥΠϑαΠΫϧʹͳΔ w ύονΛ࡞ͬͯૹΓ͍ͨ w ετϦʔϜϨεϙϯε͝ͱʹݻ༗ͷ1BSTFSΛ༩͑Δػೳ͕ ཉ͍͠ؾ͕͍ͯ͠Δ ࠷଎༧शձ

΍͍ͬͯ͘ؾ࣋ͪͰ͢ ผղͱͯ͠'JCFS"TZODΛ࢖ͬͯͳΜ͔Ͱ͖ͳ͍͔ͱτϥΠ͠·͕ͨ͠ 3BDL.JEEMFXBSFͦͷ΋ͷͷ֓೦Λ෴͢͜ͱʹͳͬͨͷͰʜʜ ࠷଎༧शձ

ं͡Όͳ͍ͱͱͯ΋ߦ͚ͳ͍͕ ඒຯ͍വؗͷళ/બ Ր 3VCZ,BJHJ)BDL4QBDFJO5PLZPവؗ࠷଎༧शձ גࣜձࣾεϚʔτόϯΫ!NP[OJPO ࠷଎༧शձ

͍͋͢വؗཙ೶ެࣾ ͓͢͢ΊιϑτΫϦʔϜ ؾ߹͕͋Ε͹ۭߓ͔Βา͍ͯߦ͚·͢ɻ ˟๺ւಓവؗࢢத໺ொ̍̍̔ ࠷଎༧शձ

വؗ໙޻๪ ͓͢͢ΊίΫωΪ͓͠ ࢢ಺Ͱ͢ɻ ˟๺ւಓവؗࢢඒݪ̐ஸ໨̓ ʵ̒ ࠷଎༧शձ

ੜϥϜ୸Րম͖ϥϜ͖ͪ ͓͢͢Ί͢΂ͯ ࢢ಺Ͱ͢ɻਓؾͷͨΊ༧໿ࠔ೉ళɻ ˟๺ւಓവؗࢢ஁࣏̎ஸ໨̐ ̑ʵ̍̍ୈ ࠷଎༧शձ

޻๪ڶഴখ԰ ͓͢͢ΊṢ͖͙ΔΈ ΋͸΍വؗͰ͸ͳ͍ɻ ˟๺ւಓُా܊ࣣ൧ொਔࢁ̐ ̏̏ʵ̐ ࠷଎༧शձ

Ϩετϥϯέϧϯ ͓͢͢Ίେপڇϋϯόʔά ΋͸΍വؗͰ͸ͳ͍ɻ ˟๺ւಓכ෦܊৿ொࣈ੺Ҫ઒ ࠷଎༧शձ

ຽ॓ϜϥΧϛϠ ͓͢͢Ί͏ʹက ͔݄͠͠͸ແ͍ ΋͸΍വؗͰ͸ͳ͍ɻ ˟๺ւಓ্ү܊஌಺ொখ୩ੴ ̍̓̑ ࠷଎༧शձ

ࡾീ൧ళ௕ສ෦ళ ͓͢͢Ί͋Μ͔͚ম͖ͦ͹ ΋͸΍വؗͰ͸ͳ͍ɻ ˟๺ւಓࢁӽ܊௕ສ෦ொதϊ ୔̑̒ʵ̍ ࠷଎༧शձ

͍͔͕Ͱ͔ͨ͠ʁ ࠷଎༧शձ

ϨϯλΧʔ͠·͠ΐ͏ ࠷଎༧शձ

RubyKaigi Hack Space in Tokyo & 函館最速 "予習" 会 / ...

RubyKaigi Hack Space in Tokyo & 函館最速 "予習" 会 / RubyKaigi Hack Space in Tokyo & The Fastest Briefing of RubyKaigi 2026 in Hakodate

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