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DDD ユビキタス言語再考 / Rethink the ubiquitous language
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Yoshitaka Okuda
May 12, 2016
Programming
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DDD ユビキタス言語再考 / Rethink the ubiquitous language
社内LT用資料
なお、5分にはおさまらなかった模様...
補足を書きました。
http://yoskhdia.hatenablog.com/entry/2016/05/22/182605
Yoshitaka Okuda
May 12, 2016
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Transcript
DDD ϢϏΩλεݴޠ࠶ߟ 2016/05/12 @yoskhdia ࣾLT
About me • ԞాՂڗʢYoshitaka Okudaʣ • גࣜձࣾSocketʢKDDI Syn.ϗʔϧσΟϯάεάϧʔϓʣ ΞʔΩςΫτ •
Twitter @yoskhdia • interested in DDD/Scala/C#/Reactive System/ Architect/System Thinking/Team Building/ Agile/ܦӦใֶ/On-Road Bike
࠷ۙͷ׆ಈ • DDD+CQRS+ESͷΑ͏ͳɺDDDΛϕʔεʹ ReactiveͳγεςϜΛษڧͨ͠Γ͍ͯ͠·͢ɻ
ϢϏΩλεݴޠ࠶ߟ վΊͯDDDຊୈ̎ষΛಡΉ
Α͋͘Δޡղ ʮϢϏΩλεݴޠʹϢʔβͷݴ༿ʯ
࣮ફ͢Δ·Ͱ ͦ͏ࢥ͍ͬͯ·ͨ͠… ॻ੶Λಡ·ͣʹωοτͷใʹཔΔͱؕΓ͍͢Α͏ͳʁ
ϢϏΩλεݴޠԿނඞཁʁ
–ॻ੶ʮυϝΠϯۦಈઃܭʯ(p.24) “͠ͳ͔Ͱࣝ๛ͳઃܭΛߦ͏ʹɺ ༻్ͷ෯͍ɺڞ༗͞ΕͨνʔϜͷݴޠ ͱɺͦͷݴ༿Λͬͨ׆ൃͳ࣮ݧ͕ඞཁ Ͱ͋Δɻ”
͡ΊͷҰจ ඥղ͘
Ϟσϧ • ͋Δʹରͯ͠ղܾࡦͷදݱ • ϞσϧཧղͷͨΊͷͷͳͷͰɺઃܭ͢Δ͏͑Ͱ Կʢଆ໘ʣΛϞσϧԽ͢Δ͔બ͢Δ ˠͳͥͳΒɺղܾࡦෳଘࡏ͢Δ • ϢʔβʢυϝΠϯΤΩεύʔτʣ։ൃऀಉ͡Ϟ σϧΛڞ༗͢Δ͜ͱ͕େࣄ
• ϞσϧΛڞ༗͠ଓ͚Δʹڧݻͳڞ௨ݴޠ͕ඞཁ
–ॻ੶ʮυϝΠϯۦಈઃܭʯ(p.26) “ϞσϧΛݴޠͷࠎ֨ͱͯ͠༻͢Δ͜ ͱɻʢதུʣݴޠΛ͏্Ͱ͕͋Ε ɺΘΓͷදݱΛ༻͍࣮ͯݧ͢Δ͜ͱ ͰɺΛऔΓআ͘͜ͱɻ”
DDDຊͷఆٛ • ͍ͭϞσϧ͕࠷ળͱݶΒͳ͍ • ۀ࣌ΛܦͯಘΔݟ͔Β৽͍͠ϞσϧΛൃ ݟ͢Δ͜ͱ͋Δ • Ϟσϧͷ͔֬͞Λݴޠͷෆࣗવ͔͞Βݕূ͢Δ • ͲΜͳͱ͖ڞ௨ݴޠΛ͏͜ͱͰࣗવͳؾ
͖ͮΛଅ͢
“υϝΠϯΤΩεύʔτɺυϝΠϯʹͭ ͍ͯͷཧղΛ͑Δʹ͍ʹ͔ͬͨ͘ ΓෆదͩͬͨΓ͢Δ༻ޠߏʹҟٞ Λএ͑Δ͖Ͱ͋Γɺ։ൃऀɺઃܭΛ ͢Δ͜ͱʹͳΔ͍͋·͍͞ෆ߹ ʹΛޫΒͤΔ͖Ͱ͋Δɻ” –ॻ੶ʮυϝΠϯۦಈઃܭʯ(p.27)
୭͠ࢥߟͷໃ६ᐆດ͞Λ ๊͍͑ͯΔɻ ࢧ͑߹͏ɻ
“·ͩϞσϧԽ͞Ε͍ͯͳ͍ػೳʹ͍ͭ ͯɺϢʔβ͕ٞ͢Δ࣌ʹɺ༻Ͱ͖ ΔϞσϧଘࡏ͠ͳ͍ɻ͔͠͠ɺ൴Β͕ ։ൃऀͱҰॹʹ৽͍͠ΞΠσΞΛݕ౼͠ ࢝ΊΔͱ͙͢ʹɺڞ༗͞ΕΔϞσϧ ͔͏ख୳Γͷϓϩηε͕։࢝͞ΕΔɻॳ Ί͗ͪ͜ͳͯ͘ෆશ͔͠Εͳ͍͕ɺ ࣍ୈʹվྑ͞Ε͍ͯ͘ɻ” –ॻ੶ʮυϝΠϯۦಈઃܭʯ(p.32)
ϞσϧΛ৭ʑࢼ͢ɺ Ϟσϧͱ֓೦Λ݁ͼ͚ͭͳ͕Βʹͯ͠ΈΔɺ ΑΓ؆୯ʹݴ͑Δํ๏Λݟ͚ͭΔɺ ͦͷ৽͍͠ߟ͑ํΛਤͱίʔυʹ࠶ͼө͢Δ
·ͱΊ • ϢϏΩλεݴޠνʔϜશһͰ߹ҙ͠Δͷ • ϢϏΩλεݴޠɺੳɾϞσϦϯάΛܦͯಘΔදग़ • Ͳ͜Ͱ͏ɻίʔυʹݶΒͣɺλεΫػೳΛهड़͢ΔͨΊʹ ΘΕͳ͚ΕͳΒͳ͍ɻগͳ͘ͱνʔϜͷ͋ΒΏΔ໘Ͱɻ • ϢϏΩλεݴޠɺઃܭʹ͋ͬͯίʔυʹݱΕͳ͍ଆ໘Λୡ͢Δ
ͨΊͷओཁͳखஈ(p.27) • ݴޠϞσϧΛ࣮ݧ͢Δɻ͜ͷϑΟʔυόοΫϧʔϓʹΑΓࣝ๛ ͳϞσϧΛݟ͚ͭग़͠ɺͦͷϞσϧΛৠཹͰ͖ΔΑ͏ʹͳΔɻ(p.14)