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Technical Successes and Failures in the History of Cookpad Development
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Issei Naruta
January 23, 2016
Technology
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36k
Technical Successes and Failures in the History of Cookpad Development
2016/01/23 Cookpad TechConf 2016
http://techconf.cookpad.com/
Issei Naruta
January 23, 2016
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Transcript
ΫοΫύουͷܧଓతͳ ͷͨΊʹ։ൃͱӡ༻͕ ԿΛ͖ͯͨ͠ͷ͔ɺ ͦͷࣦഊͱޭʹ͍ͭͯ $PPLQBE5FDI$POG ΫοΫύουגࣜձࣾΠϯϑϥετϥΫνϟʔ෦ ాҰੜ
ాҰੜ ͳΔͨ ͍͍ͬͤ !NJSBLVJ ΫοΫύουגࣜձࣾ ΠϯϑϥετϥΫνϟʔ෦ ೖࣾ
େલఏ • ࣄۀมԽ͢Δ • ৫มԽ͢Δ • ϓϩμΫτίʔυʹण໋͕͋Δ • ։ൃϦιʔε༗ݶͰ͋Δ
ࠓͷςʔϚ • ݶΒΕͨϦιʔεͰɺͲ͏ͬͯ ৫ࣄۀͷมԽʹڧ͍։ൃΛߦ͏͔ • ण໋Խͨ͠ΞϓϦέʔγϣϯͱ Ͳ͏͖߹͍͔ͬͯ͘
ྺ࢙
ʮΫοΫύουʯ ͍͔ͭΒ͋Δͷʁ
IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
IUUQTXFCBSDIJWFPSHXFCIUUQXXXDPPLQBEDPN
IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
$PME'VTJPO3BJMT
IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
IUUQTTQFBLFSEFDLDPNB@NBUTVEBUIFSFDJQFGPSUIFXPSMETMBSHFTUSBJMTNPOPMJUI
ෆ໊༪
߃ྫͷSBLFTUBUT ൛ +----------------------+-------+-------+---------+---------+-----+-------+ | Name | Lines | LOC |
Classes | Methods | M/C | LOC/M | +----------------------+-------+-------+---------+---------+-----+-------+ | Controllers | 53487 | 43106 | 578 | 4326 | 7 | 7 | | Helpers | 16467 | 13482 | 19 | 1544 | 81 | 6 | | Models |109238 | 86118 | 1938 | 9700 | 5 | 6 | | Mailers | 2259 | 1821 | 47 | 209 | 4 | 6 | | Workers | 797 | 678 | 23 | 38 | 1 | 15 | | Chanko units | 12737 | 10967 | 20 | 373 | 18 | 27 | | Libraries | 52295 | 43235 | 649 | 3954 | 6 | 8 | | Feature specs | 56569 | 45583 | 0 | 192 | 0 | 235 | | Request specs | 46276 | 39906 | 0 | 18 | 0 | 2215 | | Routing specs | 614 | 495 | 0 | 0 | 0 | 0 | | Controller specs | 64188 | 53000 | 6 | 128 | 21 | 412 | | Helper specs | 84918 | 70300 | 3 | 71 | 23 | 988 | | Model specs |163524 |135337 | 5 | 130 | 26 | 1039 | | Worker specs | 1156 | 959 | 0 | 1 | 0 | 957 | | Chanko unit specs | 9214 | 7596 | 0 | 11 | 0 | 688 | | Library specs | 26054 | 21809 | 25 | 125 | 5 | 172 | +----------------------+-------+-------+---------+---------+-----+-------+ | Total |699793 |574392 | 3313 | 20820 | 6 | 25 | +----------------------+-------+-------+---------+---------+-----+-------+ Code LOC: 199407 Test LOC: 374985 Code to Test Ratio: 1:1.9
Ͱ͔͍ͱԿ͕ى͜Δͷ͔ ىಈʹ͕͔͔࣌ؒΔ ςετʹ͕͔͔࣌ؒΔ ੩తղੳܥπʔϧ͕ಈ͔ͳ͍ ϥΠϒϥϦ͕ಈ͔ͳ͍ σϓϩΠ͕େม ϨʔϧʹΕͳ͍
ίʔυڥͷٺԽ
ͳͥਓ શ෦ॻ͖ͨ͘͠ ͳΔͷ͔
ࠒ શϦχϡʔΞϧܭը
ϦχϡʔΞϧܭը • ΤϯδχΞ10ਓ͘Β͍ • ίʔυ͕ڊେɾෳࡶ͗ͯ͢ɺ৽ػೳͷ࣮͕ࠔ • ͦͦࠓͷαʔϏε͜ΕͰ͍͍ͷͩΖ͏͔ʁ • ίʔυαʔϏεཧతͳঢ়ଶʹͨ͠ɺ Զͨͪͷߟ͑ͨ࠷ߴͷΫοΫύουʹ͠Α͏
w Α͠ϑϧεΫϥονͰॻͧ͘
ϦχϡʔΞϧେࣦഊ
Կ͕ىͬͨ͜ͷ͔ ʮαʔϏεͷίΞόϦϡʔΛநग़͢Δʯ ʮ៉ྷͳίʔυͰΠν͔Βॻ͖͢ʯ ͷ྆ํΛಉ࣌ʹΖ͏ͱͨ͠ ˠ͍ͭ·Ͱܦ࣮͕ͬͯऴΘΒͳ͍
༷ͷཧͱ ϦϑΝΫλϦϯάΛ ಉ࣌ʹΒͳ͍ํ͕͍͍ ֶͼ
खΕʹͳ͔ͬͯΒ Βͳ͍ ֶͼ
ͷ3BJMTҠߦ ͳͥ͏·͍ͬͨ͘ͷ͔ ΤϯδχΞ5ਓ Rails ʹৄ͍ࣾ͠һ 0ਓ ͦΕ΄ͲຊͰྲྀߦͬͯͳ͍
࣌ͷؔऀͷূݴ • αʔϏεͷػೳ͕·ͩগͳ͔ͬͨ • ͢Ͱʹ΅Ζ΅Ζ͔ͩͬͨΒɺ ͦΕҎ্ࣦഊ͠Α͏͕ͳ͔ͬͨ • ͦͦͦΜͳʹޭ͍ͯ͠ͳ͔ͬͨ • ʢҠߦ͕ͨ͠ɺॳ͔ͳΓෆ҆ఆͩͬͨʣ
• ए͔ͬͨ
ͰͲ͏͢Ε͍͍ͷ͔
ຊʹཉ͍͠ͷ Կͩͬͨͷ͔ʁ
ͳͥॻ͖͔ͨͬͨ͠ͷ͔ • αʔϏεͷܧଓతͳվળ͕͔ͨͬͨ͠ • ṖͷෳࡶͳϨΨγʔίʔυ͕ଟ͗ͯ͢ ػೳͷվળՃ͕ࠔ
ϨΨγʔίʔυΛ શ෦ॻ͖͞ͳͯ͘ ։ൃΛམͱͣ͞ ܧଓతͳվળ͕Ͱ͖ΔΑ͏ʹ ͢Ε͍͍ͷͰ
ϦχϡʔΞϧࣦഊ͕ੜΈग़ͨ͠ $IBOLP
$IBOLP ຊ൪ڥͰͷτϥΠ&ΤϥʔΛࢧԉ͢Δ Rails ༻ gem Unit ͱ͍͏୯ҐͰطଘίʔυͷύονΛهड़ IUUQTHJUIVCDPNDPPLQBEDIBOLP
" # طଘͷίʔυ A ΛɺελοϑϢʔβͷΈʹରͯ͠ ϕʔλ൛ͷίʔυ B ʹஔ͖͍͑ͨ ͨͩ͠ɺB ݥతͳ࣮ͳͷͰɺྫ֎͕ൃੜ͢Δ͔͠Εͳ͍
طଘͷ$POUSPMMFSͷίʔυ ϕʔλ൛ͷίʔυ
ελοϑͳΒ# #Ͱྫ֎͕ى͖ͨΒ" ελοϑҎ֎ͳΒ" ϑϥάͰذ͍ͤͯ͘͞ͱίʔυ͕ԚΕ͍ͯ͘
ϕʔλػೳͷ6OJU طଘͷ$POUSPMMFSͷίʔυ " # Chanko ͰɺUnit ͱ͍͏ϑΝΠϧʹϕʔλػೳͷϩδοΫΛهड़͢Δ invoke ݅Λຬͨͨ͠߹ʹɺطଘϩδοΫ (A)
ͷΘΓʹ Unit (B) ͕࣮ߦ͞ΕΔ B ͕ྫ֎Λىͨ͜͠߹ɺݩͷ A ͕࣮ߦ͞ΕΔͨΊɺϢʔβʹΤϥʔ͕ฦΒͳ͍ JOWPLF݅
ແࣄʹՁ͕ೝΊΒΕͨΒ ຊ൪ͷ࣭ͷίʔυʹ্͛Δ طଘίʔυΛॻ͖͑ɺUnit ϑΝΠϧΛফ͢ ʢ௨শ Un-chankoʣ
d ଟαʔϏε࣌
None
ΫοΫύου ຊମίʔυ ผϓϩδΣΫτ 3BJMT
ϓϩδΣΫτͷ͔Εํ • ࠷ॳ͔ΒผϓϩδΣΫτͱͯ͠࡞ΒΕɺ ޙ͔Βຊମͱ࿈ܞͨ͠ύλʔϯ • ࠷ॳຊମͷҰ෦ͱͯ͠࡞ΒΕɺ ޙ͔Βͨ͠ύλʔϯ
8PSME`TMBSHFTU SBJMTNPOPMJUI Λ٫͍ͨ͠
ϓϩδΣΫτׂํ • ৽نαʔϏεΛ࡞Δͱ͖ • ຊମͱີ݁߹ͤ͟ΔΛಘͳ͍ͷຊମͰ࣮ • ͦ͏Ͱͳ͍ͷ࠷ॳ͔ΒผϓϩδΣΫτͰ • طଘαʔϏε •
ׂՄೳͳͷॱׂ͍࣍ͯ͘͠
ʙ αʔϏεͷׂ
IUUQUFDIMJGFDPPLQBEDPNFOUSZ ͱ͍͍ͯهࣄɺ͓͢͢Ί
ʮຊԿ͕͍ͨ͠ͷ͔ʯΛݟۃΊΔ • γϯϓϧͳ࡞Γʹม͍͑ͨ • ෆཁͳίʔυ͕ॏͳΓɺಈ࡞͕͘ͳͬ ͍ͯΔͱ͜ΖΛղফ͍ͨ͠ • ৽͍͠ϥΠϒϥϦɺ৽͍ٕ͠ज़ΛऔΓ ࠐΊΔΑ͏ʹ͍ͨ͠
େࣄͳ͜ͱ ҰͭͣͭΔ
ೋஈ֊ͷΞϓϦέʔγϣϯ 1.ΫοΫύουຊମΛ fork ͠ɺෆཁ෦ Λૈํফͯ͠ςετΛ௨͢ 2.rails new ͨ͠৽نϓϩδΣΫτʹ ࣸܦͯ͠ςετΛ௨͢
ຊମίʔυΛGPSL ෆཁͳ෦Λૈํআ ςετΛ௨͢ ୈஈ֊
͜ͷ࣌Ͱ • ʮ͓͍͍݈͠߁ʯ͚ͩͷςετ࣮ߦɺ σϓϩΠ͕Մೳʹͳͬͨ • ͜Ε͚ͩͰेࣄۀతͳԸܙ͕͋Δ • ফ͖͠Εͳ͔ͬͨґଘϥΠϒϥϦɺ ϞϯΩʔύον͕ଟ͍ͬͯΔঢ়ଶ •
ςετ࣮ߦ͕͔ͬͨΓɺϨʔϧ͔Β ͣΕͨΓ͍ͯ͠Δͷ͕
SBJMTOFXͨ͠৽نίʔυϕʔεʹ ϩδοΫΛҠ২͍͖ͯ͠ɺ طଘͷςετ͕௨Δ͜ͱΛࢦ͢ ୈஈ֊
ҙ • ϩδοΫҠಈ͢Δ͚ͩ • ϦϑΝΫλϦϯάͨ͘͠ͳͬͯ զຫ͢Δ • ςετΛ௨աͤ͞Δ͜ͱʹूத
ʮ͓͍͍݈͠߁ʯޭ͔Βͷֶͼ • ϑϧεΫϥονͰॻ͖͞ͳ͔ͬͨ • ༷มߋϦϑΝΫλϦϯάΛߦΘͣɺ ͚ͩΛߦͬͨ • খنʹগͣͭ͠ਐΊ͍ͯ͘͜ͱͰɺ ͦΕͧΕͷஈ֊ͰࣄۀతͳϝϦοτΛ ڗडͰ͖ͨ
ʹΑΔԸܙ • ΫοΫύουຊମ • ࣄۀͻͱͭίʔυ͕খ͘͞ͳͬͨ • ͓͍͍݈͠߁ • Ϩʔϧʹͬͨී௨ͷ Rails
ΞϓϦέʔγϣϯʹͳΕͨ • ܰྔͰϞμϯͳ։ൃڥʹͳͬͨ
ίʔυ࣭
ίʔυ࣭Ϗδωεʹ Өڹ͢Δ͔ʁ
ΫοΫύουͷ͑ :&4
ίʔυͷ࣭ • Մಡੑ • ϝϯςφϯεੑ • όάͷ༗ແ • ηΩϡϦςΟ
ίʔυͷ࣭͕Өڹ͢Δͷ • ։ൃޮ • ଐਓੑ wίʔυͷण໋
Ͳ͜·ͰΔ͖͔ʁ Γ͗͢ͳ͍ ʮ៉ྷͳίʔυʯΛॻ͘͜ͱࣗମ͕తͰͳ͍ ࣄۀϑΣʔζʹͱͬͯඞཁͳ࣭·ͰΛࢦ͢
ίʔυϨϏϡʔ • ࣭ͷߴ͍ίʔυϨϏϡʔ͕ίʔυ࣭ Λ͋Δఔ୲อ͢Δ • ෛͷҨ࢈Λ͠ʹ͘͘ͳΔ
ίʔυϨϏϡʔΞϯνύλʔϯ • ࠣࡉͳจ๏ͷΈͰᎍΊΔ • ΠϯσϯτɺׅހͳͲ • ͱʹ͔͘ෆໟ
ίʔυن͕͋Δͱ ίʔυϨϏϡʔͷޮ͕ ྑ͘ͳΔ ֶͼ
IUUQTHJUIVCDPNDPPLQBETUZMFHVJEF
None
ಛ ͦΜͳΜͲͬͪͰ͍͍ͩΖͱ ͍͏ͷ݁ߏܾΊͯΔ
͘Β͍ӡ༻ͯ͠Έͯ • ࠷ॳରҙݟଟ͔ͬͨʢʣ • ϏδωεͷίʔυϨϏϡʔͳͷʹจ๏ ͷ͠ΐ͏ͳ͍૪͕ల։͞ΕΔɺ Έ͍ͨͳͷΛݟ͔͚ͳ͘ͳͬͨ • จ๏ͷ૪ελΠϧΨΠυͷํͰ ΕΑ͍
• ͋ͬͯΑ͔ͬͨελΠϧΨΠυ
ΠϯϑϥͷٺԽ
%$"84
&$$MBTTJD71$
ೋͷʮશ࡞Γ͠ʯΛܦͯ • ׂͷΑ͘Θ͔Βͳ͍ Ṗͷαʔό͕౫ଡ͞Εͨ • શαʔό͕ Infra as Code Խ͞Εͨ
• Ͳ͘͞͞Ͱ OS ֤छύοέʔδ͕ ΞοϓσʔτͰ͖ͨ
ΠϯϑϥٺԽ • ͢Ͱʹଘࡏ͠ͳ͍αʔόͷ Puppet • OS ϛυϧΣΞ͕ݹ͍·· • ڥ͕ݹͯ͘ੈ͔ؒΒִ͞ΕΔ
ΠϯϑϥٺԽͷಛ • ಈ͍͍ͯ͑͞ΕɺΞϓϦέʔγϣϯ ίʔυ΄ͲٺԽ͕ʹ ͳΓʹ͍͘ • େ෯ͳόʔδϣϯΞοϓେม͔ͭ࣌ ͕͔͔ؒΔͷͰɺඞཁʹͳ͔ͬͯΒ ಈ͖࢝ΊΔͷͰ͍
ࣜભٶ IUUQTKBXJLJQFEJBPSHXJLJਆٶࣜભٶ
ࣜભٶ ਆٶࣜભٶɺਆٶʢҏਆٶʣʹ͓͍ͯߦΘΕΔࣜભ ٶʢఆظతʹߦΘΕΔભٶʣͰ͋Δɻ ਆٶͰɺݪଇͱͯ͠20͝ͱʹɺٶʢߖେਆٶʣɾ֎ٶ ʢ๛डେਆٶʣͷೋͭͷਖ਼ٶͷਖ਼఼ɺ14ͷผٶͷશͯͷ఼ࣾ ΛΓସ͑ͯਆ࠲Λભ͢ɻ IUUQTKBXJLJQFEJBPSHXJLJਆٶࣜભٶ
ࣜભٶͷ͕͍͜͜͢͝ • ༻ͷ͍ݐஙํࣜͳͷʹ ҏਆٶ͓Αͦ1300ଘࡏ͍ͯ͠Δ • 7ੈلͷੜݐஙͷٕज़͕ݱͰ ঝ͞Ε͍ͯΔ • ભٶͷ༻ࡐͱͳΔΛҭͯΔͷʹ 200Ҏ্͔͔Δ
࡞Γ͢͜ͱΛ લఏʹ͢Δ͜ͱͰ ण໋Խ ֶͼ
None
*OGSB*OGSB • CentOS 6.2 -> Ubuntu 14.04 (16.04) • Puppet
-> Itamae • VPCωοτϫʔΫͷ࠶ઃܭ • ֤छύοέʔδɺϛυϧΣΞͷ όʔδϣϯΞοϓ • ͦͷଞϨΨγʔͷ৽
Πϯϑϥࣜભٶ • ৽͘͠࡞Δαʔό infra2 Ͱ ϓϩϏδϣχϯά͢Δ • طଘͷαʔόগͣͭ͠ infra2 Ͱ
࡞Γ͍ͯ͘͠
·ͱΊ
େલఏʢ࠶ʣ • ࣄۀมԽ͢Δ • ৫มԽ͢Δ • ϓϩμΫτίʔυʹण໋͕͋Δ • ։ൃϦιʔε༗ݶͰ͋Δ
ੜ͖͢ΔࣄۀͷͨΊʹ ٕज़͕Ͱ͖Δ͜ͱ • ࣭৽͠͞Λอͭ͜ͱࣗମΛ ΈԽ͢Δ • खΕʹͳΔલʹগͣͭ͠Δ • ࡉ͔͘ޭମݧΛ࡞ΓɺΞοϓσʔτ ͷՁΛ৫ʹ࣮ײͤ͞Δ