なぜあなたのチームのプロダクトは太ってしまうのか #postudy

by TAKAKING22

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ͳͥ͋ͳͨͷνʔϜͷ ϓϩμΫτ͸ଠͬͯ͠·͏ͷ͔ ʙϓϩμΫτϚωδϝϯτΛ͔ͬͨ͡ ΤϯδχΞ͕ײͨ͡-FTTJTNPSFͷۃҙʙ ϓϩμΫτΦʔφʔࡇΓ ٴ෦ܟ༤ !5",",*/(

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ٴ෦ܟ༤ !5",",*/( ✓ ՎͬͯགྷΕΔΤϯδχΞ ✓ ΞδϟΠϧϞϯελʔ ✓ अಓεΫϥϜϚελʔ ✓ ,JOHPG,JOH4UZMF ✓ $FSUJpFE*EMF.BTUFS ϓϩμΫτϚωδϝϯτ͸͡Ί·ͨ͠

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͜Μͳײ͡ͷνʔϜΛ૝ఆ ϓϩμΫτΦʔφʔ ։ൃνʔϜ લఏ

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͜Μͳ͜ͱ͋Γ·ͤΜ͔ʁ

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ʮશવ༏ઌlॱҐz͡Όͳ͍ɻɻʯ ʮ͑ʁ΄Μͱʹશ෦ͭ͘Δͷʁʯ ʮ͏Θʔ͜͜ΊΜͲ͍͘͞΍ͭͩʯ ʮ͜Ε͸͚ͬ͜͏͔͔࣌ؒΔͳ͋ʯ ΤϯδχΞ͸ʜ

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ʮ͔ͳΓ࡟͚ͬͨͲ͜ΕҎ্͸ϜϦʯ ʮڝ߹αʔϏεʹ͋ΔΜ͔ͩΒ  ͜ͷػೳ͸ͳ͍ͱμϝͩͶʯ ʮʢ͔ͳΓرগύλʔϯʣͷ࣌ɺ  Ϣʔβʔ͕ࠔΔ͔ΒඞཁͩΑͶʯ ҰํϓϩμΫτΦʔφʔ͸ʜ

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ʮ࡞Γͨ͘ͳ͍͚ͩͳΜ͡Όͳ͍ͷʯ 1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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ʢ͜͏ͳͬͯ͠·Θͳ͍Α͏ʹʣ ϓϩμΫτΦʔφʔͱΤϯδχΞ͕ ͲͷΑ͏ʹίϥϘϨʔγϣϯ͢Ε͹ɺ -FTTJTNPSFͳϓϩμΫτΛ ໨ࢦ͢͜ͱ͕Ͱ͖Δͷ͔ ߟ͑ͯΈͨ͜ͱʹ͍͓ͭͯ࿩͠·͢ ࠓ೔ͷ͓࿩

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ͳͥখͭ͘͘͞Δඞཁ͕͋Δͷ͔

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1IPUPCZ'MPSJBOB IUUQTHPPHMHYU+Z

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5IF4UBOEJTI(SPVQ$IBPTSFQPSU

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5IF4UBOEJTI(SPVQ$IBPTSFQPSU ͷػೳ͸ ΄ͱΜͲPS·ͬͨ͘࢖ΘΕͳ͍

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૯຿লʮฏ੒೥௨৴ར༻ಈ޲ௐࠪʯ εϚʔτϑΥϯ͕ΩϟζϜΛ௒͑ͨͷ͸਺೥લ

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ࣄલʹͳʹ͕౰ͨΔ͔ ༧ଌ͢Δ͜ͱ͸ͱͯ΋೉͍͠ 1IPUPCZ$ISJT1PUUFS IUUQTHPPHM7/L['(

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։ൃ؀ڥ΍։ൃٕज़ͷൃలʹΑͬͯ ιϑτ΢ΣΞͷ։ൃ΍ϦϦʔεʹ ίετ͸͔ͳΓ࡟ݮͰ͖ΔΑ͏ʹͳͬͨ

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✓ ؤுͬͯͭͬͯ͘΋ɺ  ͷػೳ͸͋·Γ࢖ΘΕͳ͍ ✓ ྲྀߦΓഇΓͷมԽ͕ܹ͘͠ɺ  ࣄલʹ༧ଌ͢Δ͜ͱ͸೉͍͠ ✓ ϦϦʔεʹ͔͔Δίετ͸ɺ  ੲͱൺ΂͔ͯͳΓ࡟ݮͰ͖Δ ·ͱΊΔͱ

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ૉૣ͘ϑΟʔυόοΫΛಘΔ 1IPUPCZ#FUTZ8FCFS IUUQTHPPHMU:M%FY

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ϑΟʔυόοΫͷ ػձ͕૿͑Δ

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͓ۚΛՔ͙ظؒ ΋૿͑ͦ͏

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·ͱΊͯग़͢ͷͰ͸ͳ͘ɺ খग़͠ʹͯͨ͘͠͞Μͷ ϑΟʔυόοΫΛಘΔ ϑΟʔυόοΫʹֶͿνϟϯε

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ڝ߹ͱಉ͡ػೳ͕ ͳ͍ͱෆ҆ʹͳΔ໰୊

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1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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੒ޭ͍ͯ͠ΔϓϩμΫτʹ͸ ϑΟʔυόοΫΛճͯ͠ վળ͖ͯͨ͠ܦݧͱ࢓૊Έ͕͋Δ

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͓͓ʂ ͜ΜͳαʔϏε ग़ͨΜͩʔ ͚ͬ͜͏ ͍Ζ͍Ζػೳ͋ͬͯ ͍͍Ͷ ๞͖͖ͯͨͳ͋ ɾɾɾɾɻ ࠷ॳ͔Βͭ͘Γ͜Ήͱʜ

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໘ന͍ʂ ͚Ͳ΋ͬͱػೳ ΄͍͠ͳ͋ ͋ɺߋ৽LULS ͍͍Ͷʂʂ ͜Ε΋͋Δͱ ͍͍Μ͚ͩͲͳ͋ ͓͓ʂ ཉ͔ͬͨ͠ػೳ ૿͑ͯΔ͡ΌΜ ӡӦ΍ΔͶʂ ·ͨΞοϓσʔτ ͖ͯΔʂʂ খ͘͞·Θ͢ͱɾɾɾ

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1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN lൃݟz΍l੒௕Λײ͡Δ͜ͱz΋ ϢʔβʔʹͱͬͯͷՁ஋ʹͳΓಘΔ

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Ϗδωεͱ͚ͯͩ͠͡Όͳ͘ Ϣʔβʔ΍νʔϜʹͱͬͯ΋ খͭͬͯ͘͘͞ ૉૣ͘ϑΟʔυόοΫΛ ΋Βͬͨํ͕Αͦ͞͏ 1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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ͳͥখͭ͘͘͞Δ͜ͱ͸೉͍͠ͷ͔

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খͭ͘͘͞Δ͜ͱ͕ Αͦ͞͏ͳ͜ͱ͸Θ͔ͬͨ

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ͳͥখͭ͘͘͞Ε͍ͯͳ͍ͷ͔ 1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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ʮ͜ΕҎ্͸࡟Εͳ͍ʯ ʮશ෦ඞਢͩͶʯ ͜Μͳ෩ʹݴͬͨ͜ͱ ݴΘΕͨ͜ͱ͋Γ·ͤΜ͔ʁ

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Ձ஋͕͋Δ 7BMVBCMF ࢖͏͜ͱ͕ Ͱ͖Δ 6TBCMF ࡞Δ͜ͱ͕ Ͱ͖Δ 'FBTJCMF ͜ͷ͋ͨΓΛ ૂ͏ͷ͕Αͦ͞͏

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Ձ஋͕͋Δ 7BMVBCMF ࢖͏͜ͱ͕ Ͱ͖Δ 6TBCMF ࡞Δ͜ͱ͕ Ͱ͖Δ 'FBTJCMF ϓϩάϥϜ σʔλϞσϦϯά γεςϜΞʔΩςΫνϟ ωοτϫʔΫ ϓϩδΣΫτϚωδϝϯτ ɾɾɾ Ϣʔβʔௐࠪ 8FCσΟϨΫγϣϯ 69 ϢʔβϏϦςΟ ΞΫηγϏϦςΟ ɾɾɾ ࢢ৔ௐࠪ ཁٻ։ൃ 1SPCMFN4PMVUJPO'JU ɾɾɾ ༧ࢉ؅ཧ ϚʔέςΟϯά ൢചܭը ɾɾɾ

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ϑϧελοΫϓϩμΫτΦʔφʔ Ͱͳ͍ݶΓɺ͢΂ͯͷϓϩμΫτͷ ൑அࡐྉΛ̍ਓͰूΊΔ͜ͱ͸ෆՄೳ 1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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ʮ͜ΕҎ্͸࡟Εͳ͍ʯ ʮશ෦ඞਢͩͶʯ ༏ઌॱҐΛ͚ͭΔͨΊͷ ৘ใ͕ෆ଍͍ͯ͠Δ

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ʮͪΐͬͱ͜Ε΋͓ئ͍ʯ ʮগ͠ͳΒ௥Ճ͍͍ͯ͠Ͱ͠ΐʯ ͜Μͳ෩ʹݴͬͨ͜ͱ ݴΘΕͨ͜ͱ͋Γ·ͤΜ͔ʁ

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͚ͬͬ͟Μͳʂʂ

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1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN ࠷ॳখ͘͞ܭը͍ͯͯ͠΋ɺ ։ൃ͕࢝·͔ͬͯΒϓϩμΫτ͕ ଠ͍ͬͯ͘͜ͱ͸͋Γ͕ͪ

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ʮͪΐͬͱʯʮͪΐͬͱʯ ͕ՐࣄʢԌ্ʣͷݩ CZ5BLBP0ZPCF

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✓ ϓϩμΫτΦʔφʔ͚ͩͰ  ༏ઌॱҐΛ൑அ͢Δͷ͸೉͍͠ ✓ ෼ۀͯ͠࡞ۀΛਐΊΔ͜ͱͰ  ຊؾʹͳΔλΠϛϯά͕ͣΕͯ  ༨ܭͳཁ݅௥Ճ͕ൃੜ͕ͪ͠

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Ͳ͏΍ͬͯখͭ͘͘͞Ε͹͍͍ͷ͔

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Ձ஋͕͋Δ 7BMVBCMF ࢖͏͜ͱ͕ Ͱ͖Δ 6TBCMF ࡞Δ͜ͱ͕ Ͱ͖Δ 'FBTJCMF

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༏ઌॱҐΛ͚ͭΔͨΊʹ͸ ͢΂ͯͷཁૉ͔Β૯߹తʹ ൑அ͢Δඞཁ͕͋Δ

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ϑϧελοΫϓϩμΫτΦʔφʔ ͸ͨͿΜ͍ͳ͍ 1IPUPCZϑϦʔࣸਅૉࡐͺͨͦ͘ IUUQTXXXQBLVUBTPDPN

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શһͰू·ͬͯߟ͑Ε͹͍͍

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ΈΜͳͰͪΐͬͱͣͭิ׬͢Δ

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1IPUPCZ+PF"MMFO IUUQTHPPHM4Y%QK ϓϩμΫτΦʔφʔͷ໾ׂ ޴ׇ͕͍͔ͨΒ ͋ͷίϯϏχʹஔ͍ͯ͋ΔҿΈ෺ ͱಉ͡Α͏ͳ΋ͷ͕ཉ͍͠

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1IPUPCZ+PF"MMFO IUUQTHPPHM4Y%QK ϓϩμΫτΦʔφʔͷ໾ׂ ͋ͷ͓٬͞Μʹ͜ͷλΠϛϯάͰ ঎඼Λങͬͯ΋Β͏ͨΊʹɺ ঎඼બ୒ɾ࢓ೖΕܭըɾࡏݿ؅ཧ ʹ͍ͭͯߟ͑Δ͜ͱ

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ϓϩμΫτΦʔφʔ໾ׂ͸ɺ ίϯϏχͷ͓٬͞ΜʹͳΔ͜ͱͰ͸ͳ͘ ίϯϏχͷళ௕ͷΑ͏ʹߟ͑Δ͜ͱͩ CZ:BTVOPCV,BXBHVDIJ

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ΤϯδχΞͷ಄ͷத ʮ͜ͷػೳ΄Μͱʹ࢖͏͔ͳʁʯ ʮ͜ͷػೳ΁ͷಋઢऑ͍ͳʯ ʮ͜ͷػೳͬͪ͜ʹ΋࢖͑ͦ͏ʯ

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ΤϯδχΞͷ಄ͷத ʮ͜ͷػೳ΄Μͱʹ࢖͏͔ͳʁʯ ʮ͜ͷػೳ΁ͷಋઢऑ͍ͳʯ ʮ͜ͷػೳͬͪ͜ʹ΋࢖͑ͦ͏ʯ ࡞Δ͜ͱ͕Ͱ͖Δ͔Ͳ͏͔͚ͩͰͳ͘ Ϗδωε΍Ϣʔβʔͷ͜ͱ΋ߟ͍͑ͯΔʁ

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ਆ͸ࡉ෦ʹ॓Δ 1IPUPCZBOESFXTNJUI IUUQTHPPHMM*2Z

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͜ͷ͋ͨΓͰ ԿΛ͢Δ΂͖͔

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ϓϩμΫτΦʔφʔ͸ɺ ։ൃνʔϜͷ࡞ۀͱϓϩμΫτͷՁ஋ͷ ࠷େԽʹ੹೚Λ࣋ͭ εΫϥϜΨΠυ

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·ͱΊ

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ʮ͓Ί͑ΒɺҰॹʹ͸ͨΒ͚Αʯ

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୭͕ԿΛ΍Δ΂͖͔͍ͬͯ͏ ೄுΓ૪͍Λͩ͢͠ͱ͖Γ͕ͳ͍

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lࢲz͔Βlࢲͨͪz΁

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ΤϯδχΞϦϯά΍։ൃϓϩηεͷ࿩Λ ͍ͯͯ͠΋ಉ݁͡࿦ʹͳΔ

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ιϑτ΢ΣΞ։ൃ্ͷ໰୊ͷଟ͘͸ɺ ٕज़తͱ͍͏ΑΓࣾձֶతͳ΋ͷͰ͋Δ CZτϜɾσϚϧίςΟϞγʔɾϦελʔʢϐʔϓϧ΢ΣΞʣ

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ࠓ೔࿩ͨ͠಺༰͸ ελʔτϥΠϯʹཱͭͨΊͷ࿩ 1IPUPCZSPCFSUWPPST IUUQTHPPHM(-''T

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໘ന͍ਓ͕ͨ͘͞Μ͍ΔձࣾͰ ελʔτΞοϓΑΓ΋͸΍͘͏·͘ ৽نࣄۀΛ·ΘͤͨΒઈରʹ໘ന͍ ࠓऔΓ૊ΜͰ͍Δ͜ͱ ͦΕ͕Ͱ͖Δ࠷ڧͷνʔϜΛ࡞Δ

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$POUBDUNF !5",",*/( 5IBOLZPVGPSMJTUFOJOH