プロダクトを10年運用するチームをつくる / DevSumi2020

by KASUYA, Daisuke

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ EFWTVNJ## %FWFMPQFST4VNNJU גࣜձࣾ͸ͯͳപ୩େี JEEBJLTZ

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ࣗݾ঺հ wപ୩େี JEEBJLTZ!EBJLTZ wגࣜձࣾ͸ͯͳ.BDLFSFMνʔϜσΟϨΫλʔ wೝఆεΫϥϜϚελʔ

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ มԽ͠ଓ͚Δपล؀ڥͱγεςϜ ਓͷೖΕସΘΓ΁ͷରॲ ٕज़తෛ࠴ͱγεςϜͷεέʔϧ EFWTVNJ##

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ มԽ͠ଓ͚Δपล؀ڥͱγεςϜ ਓͷೖΕସΘΓ΁ͷରॲ ٕज़తෛ࠴ͱγεςϜͷεέʔϧ EFWTVNJ##

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2ϓϩμΫτΛ೥ ҆ఆՔಇͤ͞Δۃҙͱ͸ʁ

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֨ݴ ʮಈ͍͍ͯΔγεςϜ͸৮Δͳʯ

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"ϦϦʔεޙ೥ؒ৮Βͳ͍

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֨ݴ ʮಈ͍͍ͯΔγεςϜ͸৮Δͳʯ

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ͦΕ͸ੲͷ࿩

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पล؀ڥͷมԽ w 04ͷϝδϟʔΞοϓσʔτ w ͓Αͦ೥ճϖʔε w ϒϥ΢βͷΞοϓσʔτ w ͓Α݄ͦճϖʔε w ৽ͨʹൃݟ͞ΕΔ੬ऑੑ w ͓Αͦຖ೔

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खݩͷεϚʔτϑΥϯΞϓϦ ࣗಈΞοϓσʔτ͕౰ͨΓલ

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Ϣʔβʔ͸ҙࣝ͢Βͤͣʹ ιϑτ΢ΣΞ͸ߋ৽͞ΕΔ

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ݱ୅ͷγεςϜ͸ ৗʹߋ৽͞Εଓ͚Δ

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γεςϜΛߋ৽͠ଓ͚Δ w $*$%ͷ੔උ w ςετͷࣗಈԽ σϓϩΠͷࣗಈԽ w ؂ࢹͷ੔උ w %FW0QTͷߏங w ։ൃͱӡ༻ͷ༥߹43&JOH

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.BDLFSFMͷ৔߹ Ұ෦ͷྫ w $*$%ͷ੔උ w +FOLJOTͰ$* ຖिՐɾ໦ʹఆظϦϦʔε w ؂ࢹͷ੔උ w .BDLFSFMͷυοάϑʔσΟϯά w %FW0QTͷߏங w ΞϓϦέʔγϣϯΤϯδχΞͱ43&͕ಉ͡ΧϯόϯϘʔυͰλεΫ؅ཧ

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γεςϜΛʮ৮Γଓ͚Δʯ ؀ڥΛ੔͑Δ

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IUUQTTQFBLFSEFDLDPNEBJLTZEFWTVNJLBOTBJ

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͜͜·Ͱ͕લఏ ͔͜͜Βຊ୊ͷνʔϜͷ࿩

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ มԽ͠ଓ͚Δपล؀ڥͱγεςϜ ਓͷೖΕସΘΓ΁ͷରॲ ٕज़తෛ࠴ͱγεςϜͷεέʔϧ EFWTVNJ##

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γεςϜΛҡ࣋͢Δͷ͸ ਓ

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೥ؒਓ͕ೖΕସΘΒͳ͍ νʔϜ͸ͳ͍

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ҟಈ΍ୀ৬ͳͲ ͦ΋ͦ΋৽௠୅ँ΋ॏཁ

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ਓͷೖΕସΘΓʹΑࣦͬͯ͏΋ͷ w ͦͷਓͱա͔͚͕͑͢͝ͷͳ͍೔ʑ w ͦͷਓ͕͍࣋ͬͯΔϓϩμΫτݻ༗ͷεΩϧ΍υϝΠϯ஌ࣝ

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ࣦΘͳ͍Α͏ʹ͢ΔͨΊʹ w ͦͷਓͱա͔͚͕͑͢͝ͷͳ͍೔ʑ w 4/4Ͱͷͭͳ͕Γ΍೥լঢ় w ͦͷਓ͕͍࣋ͬͯΔϓϩμΫτݻ༗ͷεΩϧ΍υϝΠϯ஌ࣝ w εΩϧϚοϓ ো֐ରԠԋश ࣜ೥ભٶͳͲͰܧঝ͠ଓ͚Δ

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ࣦΘͳ͍Α͏ʹ͢ΔͨΊʹ w εΩϧϚοϓ w ো֐ରԠԋश w ࣜ೥ભٶ ৄࡉ͸࣍ͷύʔτͰ

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ࣦΘͳ͍Α͏ʹ͢ΔͨΊʹ w εΩϧϚοϓ w ো֐ରԠԋश w ࣜ೥ભٶ ৄࡉ͸࣍ͷύʔτͰ

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εΩϧϚοϓ IUUQTXXXSZV[FFDPNDPOUFOUTCMPH

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εΩϧϚοϓͷޮՌ w νʔϜͷεΩϧόϥϯεͷՄࢹԽ w ϦεΫΛࣄલʹ࡯஌Ͱ͖Δ w νʔϜ͔ΒࣦΘΕͨεΩϧʢ஌ࣝʣʹؾ͚ͮΔ w ֶश໨ඪͷࢦ਑ʹͳΔ

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εΩϧϚοϓҡ࣋ͷίπ w ධՁʹ͔ͭΘͳ͍ w ৺ཧత҆શʹΑΓਖ਼௚ͳεΩϧ͕ՄࢹԽ͞ΕΔ w ଞͷνʔϜͱൺ΂ͳ͍ w νʔϜͷঢ়ଶΛՄࢹԽ͢ΔͨΊͷ΋ͷͳͷͰɺҙຯ͕ͳ͍ w ߲໨ͷཻ౓Λؾʹ͠ͳ͍ w ࡶʹࢥ͍͍߲ͭͨ໨Λฒ΂Δ͘Β͍Ͱྑ͍ɻͪΌΜͱ͠Α͏ͱ͢Δͱ࡞Εͳ͍ w ఆظతͳϝϯςφϯε w ৼΓฦΓձͷΞδΣϯμʹೖΕΔͷ͕Φεεϝ

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.BDLFSFMͷ৔߹ ࣌఺ͷεφοϓγϣοτ ظͷมΘΓ໨ͰҟಈͳͲ͕͋Γɺ΍΍ภΓ͕ੜ͍ͯ͡Δͷ͕ݟ͑Δ

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.BDLFSFMͷ৔߹ ि͓͖ؒͷৼΓฦΓͰϝϯςφϯε εϓϨουγʔτʹཤྺΛ࢒͍ͯ͠Δ

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εΩϧϚοϓͷޮՌͷ࣮ײ $͞Μ͕ҟಈʹΑΓ཭୤

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εΩϧϚοϓͷޮՌͷ࣮ײ ͍͔ͭ͘ͷεΩϧ͕ة͏͘ͳΔ͜ͱ͕ݟͯऔΕΔ

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εΩϧϚοϓͷޮՌͷ࣮ײ w εΩϧϚοϓΛӡ༻ͯ͠͸͡Ίͯͷϝϯόʔͷୀ৬ w ϑϩϯτΤϯυʹڧ͍ΤϯδχΞͷ཭୤ͩͬͨ w ͍ͭ΋ͷ௨ΓৼΓฦΓձͰεΩϧϚοϓͷϝϯςφϯελΠϜ w εΩϧϚοϓΛը໘ʹө͠ͳ͕Βୀ৬ϝϯόʔͷྻΛ࡟আ w εΩϧϚοϓ্Ͱ͍͔ͭ͘ͷٕज़͕໨ʹݟࣦ͑ͯΘΕ͍ͯΔ͜ͱʹνʔϜ͕૽વ ͱͨ͠ w εΩϧϚοϓͷ͓͔͛Ͱ۩ମతʹͲ͕͜ऑ͘ͳͬͨͷ͔͕໌Β͔ʹͳͬͨ

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ࣦΘͳ͍Α͏ʹ͢ΔͨΊʹ w εΩϧϚοϓ w ো֐ରԠԋश w ࣜ೥ભٶ ৄࡉ͸࣍ͷύʔτͰ

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ো֐ରԠ͋Δ͋Δ w ଐਓԽ͕ͪ͠ w ݹࢀϝϯόʔͷಠஃ৔ w ৽نϝϯόʔ͸ͳ͔ͳ͔ೖΓ͜ΜͰ͍͚ͳ͍ w ͦ΋ͦ΋ۓٸࣄଶͳͷͰɺஸೡʹڭҭ͍ͯ͠ΔՋ͕ͳ͍

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৽نϝϯόʔͷো֐ରԠ w ͳʹ͕ى͖͍ͯΔ͔Θ͔Βͳ͍ w ରԠϝϯόʔ͕ԿΛ΍͍ͬͯΔ͔Θ͔Βͳ͍ w ԿΛֶ΂͹Ͱ͖ΔΑ͏ʹͳΔ͔Θ͔Βͳ͍

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ো֐ରԠԋश

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ো֐ରԠԋश w εςʔδϯά؀ڥΛΘ͟ͱյͯ͠෮چͤ͞Δ w ස౓ w ൒ظʹճఔ౓εΩϧϚοϓΛࢀߟʹ w ࣮ࡍͷো֐͕ൃੜͨ͠௚ޙʹɺಉ͡γφϦΦͰ w ౰೔ো֐ରԠΦϖϨʔγϣϯʹࢀՃͰ͖ͳ͔ͬͨਓΛத৺ʹ

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ো֐ରԠԋश .BDLFSFMͷྫ w "84 .VMUJ";ߏ੒ ͷ";ͷҰͭΛҙਤతʹյͯ͠෮چͤ͞Δ w σʔλϕʔεΛҙਤతʹյͯ͠෮چͤ͞Δ w ͦͷଞ࣮ࡍͷো֐ൃੜͷϙετϞʔςϜޙʹಉҰγφϦΦΛ࠶ݱͤ͞Δ

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w ΅͘͸༗څΛऔಘͯ͠ϥϯνλΠϜʹण࢘԰ͰञΛҿΜͰ͍ͨ w 4MBDLʹͯো֐ൃੜͷ஌Βͤɻ͔͠΋σʔλετϨʔδഁଛ w ߄ͯͯձܭͯ͠ؼ୐ʢࣗ୐ʹؼͬͨΒΦϖϨʔγϣϯʹࢀՃͰ͖Δʣ w ϝϯόʔʮ͋ɻ͢Έ·ͤΜɻ͜ΕԋशͰ͢ʯ w ࢥ͍͕͚ͣۓٸ࣌ͷσΟϨΫλʔͷෛՙࢼݧʹ ͋Δ೔

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͜͏͍͏ײ͡Ͱ ࢥཱ͍ͬͨͱ͖ʹ΍Δͱ͖΋

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ࣦΘͳ͍Α͏ʹ͢ΔͨΊʹ w εΩϧϚοϓ w ো֐ରԠԋश w ࣜ೥ભٶ ৄࡉ͸࣍ͷύʔτͰ

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ มԽ͠ଓ͚Δपล؀ڥͱγεςϜ ਓͷೖΕସΘΓ΁ͷରॲ ٕज़తෛ࠴ͱγεςϜͷεέʔϧ EFWTVNJ##

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αʔϏεͷ੒௕଎౓ ྫ.BDLFSFM

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IUUQTTQFBLFSEFDLDPNNBDLFSFMJPNBDLFSFMEBZOVNCFS

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γεςϜج൫ٕज़ͷมԽ

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γεςϜج൫ٕज़ͷมԽ w ΦϯϓϨϛεΫϥ΢υίϯςφ w ϞϊϦγοΫϚΠΫϩαʔϏε w খ͘͞࡞ͬͯେ͖͘ҭͯΔ w ౰ॳ͔Βن໛ײΛ༧ଌͯ͠ΞʔΩςΫνϟΛઃܭͯ͠΋पล؀ڥͷมԽ ΍ͱ͖ʹ͸༧૝Λ௒͑ΔεϐʔυͰγεςϜ͕εέʔϧ͢Δ͜ͱ΋͋Δ

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.BDLFSFMͷج൫ͷมભ w ΦϯϓϨϛε؀ڥʹϞϊϦγοΫͳγεςϜΛߏங w 63-֎ܗ؂ࢹػೳΛ৽ن։ൃɻϞϊϦγοΫͳγεςϜ͔Β෼཭ͨ͠αϒ γεςϜΛߏங w ͜͜ΛػʹϚΠΫϩαʔϏεԽ͕গͣͭ͠ਐΉ w ΦϯϓϨϛε͔ΒΫϥ΢υγϑτɻ"84΁ͷ׬શҠߦ w αϒγεςϜ͔Βॱ࣍ίϯςφԽ /PX

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ҰఆͷλΠϛϯάͰ γεςϜͷࠜຊʹखΛೖΕΔ

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੒௕ʹΑΔγεςϜͷεέʔϧ΍ ٕज़తෛ࠴ͷฦࡁͷͨΊʹ

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ࣜ೥ભٶ

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lਆࣾ౳ʹ͓͍ͯɺ पظΛఆΊ఼ͯࣾΛߋ৽͠ɺ ৽ͨͳ఼ࣾʹਆମΛҠ͢͜ͱɻz ࣜ೥ભٶͱ͸ʁ IUUQTLPUPCBOLKQXPSE&#$'&##&#&"&"&

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ݱ࣮ͷࣜ೥ભٶ ҏ੎ਆٶ w ೥ʹҰ౓఼ࣾΛݐͯସ͑Δʢྡʹ·ͬͨ͘ಉ͡΋ͷΛݐͯΔʣ w ٶେ޻ͷٕज़ͷܧঝ w ఼ࣾͷ͕࢟߃ٱతʹҡ࣋͞Εଓ͚Δ

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ιϑτ΢ΣΞͷࣜ೥ભٶ w ΞʔΩςΫνϟ΍ΞϓϦέʔγϣϯϑϨʔϜϫʔΫɺσʔλετΞͳͲγ εςϜͷࠜװ෦෼ʹखΛೖΕΔΑ͏ͳϓϩδΣΫτΛҰఆִؒͰߦ͏ w ٕज़తෛ࠴ͷฦࡁ w Ϟμϯͳιϑτ΢ΣΞ؀ڥ΁ͷదԠ w ΤϯδχΞͷٕज़ܧঝ w લύʔτͷʮਓͷೖΕସΘΓ΁ͷରॲʯ΋݉ͶΔ

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ιϑτ΢ΣΞͷࣜ೥ભٶ w ݱ࣮ͷࣜ೥ભٶͱҟͳΓɺϑϧεΫϥονͰ͸ͳ͍ɻϑϧεΫϥονΛ͠ͳ͍ͨΊͷΤ ϯδχΞϦϯά w εέʔϧΞοϓ΁ͷରॲɻϞμϯͳΞʔΩςΫνϟ΁ͷҠߦͱ͍ͬͨϙδςΟϒͳཧ༝ ΛϞνϕʔγϣϯͱ͢Δ w Քಇͯ͠೥ܦͬͨϓϩμΫτ͕೥લͷΞʔΩςΫνϟͰಈ͍͍ͯͯྑ͍͔ w ΤϯδχΞͷٕज़ܧঝ w ࣜ೥ભٶ࣮ࢪҎલϓϩμΫτʹ࠷΋ৄ͍͠ਓ৽نߏங࣌ͷϝϯόʔ w ࣜ೥ભٶ࣮ࢪҎ߱ϓϩμΫτʹ࠷΋ৄ͍͠ਓࣜ೥ભٶʹࢀըͨ͠ϝϯόʔ

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.BDLFSFMͷࣜ೥ભٶ w ΦϯϓϨϛε͔Β"84΁ͷΠϯϑϥશ໘Ҡߦ ೥ w ࣌ܥྻσʔλϕʔεͷ࡮৽ ೥ w (SBQIJUF 044 EJBNPOE ࣗ࡞ w ܾࡁγεςϜͷҠߦ ೥ w ϑϩϯτΤϯυΛ"OHVMBS+4͔Βશը໘3FBDU΁Ҡߦ /PX

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IUUQTTQFBLFSEFDLDPNLJ[LPINBDLFSFMJOIVSBKJQBOBXTZJYJOHGBMTFXVUBJMJ

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IUUQTTQFBLFSEFDLDPNBTUKNBDLFSFMNFFUVQOVNCFSUPLZP

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ϓϩμΫτΛ೥ӡ༻͢Δ νʔϜΛͭ͘Δ มԽ͠ଓ͚Δपล؀ڥͱγεςϜ ਓͷೖΕସΘΓ΁ͷରॲ ٕज़తෛ࠴ͱγεςϜͷεέʔϧ EFWTVNJ##