Technical Successes and Failures in the History of Cookpad Development

2016/01/23 Cookpad TechConf 2016
http://techconf.cookpad.com/

1. ΫοΫύουͷܧଓతͳ੒௕ ͷͨΊʹ։ൃͱӡ༻͕
 ԿΛ͖ͯͨ͠ͷ͔ɺ
   ͦͷࣦഊͱ੒ޭʹ͍ͭͯ 
   $PPLQBE
   5FDI$POG
   ΫοΫύουגࣜձࣾ
   ΠϯϑϥετϥΫνϟʔ෦
   ੒ా
   Ұੜ
2. ੒ా
   Ұੜ ͳΔͨ ͍͍ͬͤ !NJSBLVJ ΫοΫύουגࣜձࣾ
   ΠϯϑϥετϥΫνϟʔ෦௕
   ೖࣾ೥໨
3. େલఏ • ࣄۀ͸มԽ͢Δ • ૊৫͸มԽ͢Δ • ϓϩμΫτ΍ίʔυʹ͸ण໋͕͋Δ • ։ൃϦιʔε͸༗ݶͰ͋Δ
4. ࠓ೔ͷςʔϚ • ݶΒΕͨϦιʔεͰɺͲ͏΍ͬͯ
 ૊৫΍ࣄۀͷมԽʹڧ͍։ൃΛߦ͏͔ • ௕ण໋Խͨ͠ΞϓϦέʔγϣϯͱ
 Ͳ͏޲͖߹͍͔ͬͯ͘
5. ྺ࢙
6. ʮΫοΫύουʯ͸
   ͍͔ͭΒ͋Δͷʁ
7. IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
8. IUUQTXFCBSDIJWFPSHXFCIUUQXXXDPPLQBEDPN 
9. IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
10. 
    $PME'VTJPO
    
    3BJMT
11. IUUQTJOGPDPPLQBEDPNDPSQPSBUFIJTUPSZ
12. IUUQTTQFBLFSEFDLDPNB@NBUTVEBUIFSFDJQFGPSUIFXPSMETMBSHFTUSBJMTNPOPMJUI 
13. ෆ໊༪
14. ߃ྫͷ
    SBLF
    TUBUT
    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
15. Ͱ͔͍ͱԿ͕ى͜Δͷ͔ ىಈʹ͕͔͔࣌ؒΔ ςετʹ͕͔͔࣌ؒΔ ੩తղੳܥπʔϧ͕ಈ͔ͳ͍ ϥΠϒϥϦ͕ಈ͔ͳ͍ σϓϩΠ͕େม Ϩʔϧʹ৐Εͳ͍
16. ίʔυ΍؀ڥͷ࿝ٺԽ
17. ͳͥਓ͸
    શ෦ॻ͖௚ͨ͘͠
    ͳΔͷ͔
18. ࠒ
    શϦχϡʔΞϧܭը
19. ϦχϡʔΞϧܭը • ΤϯδχΞ10ਓ͘Β͍ • ίʔυ͕ڊେɾෳࡶ͗ͯ͢ɺ৽ػೳͷ࣮૷͕ࠔ೉ • ͦ΋ͦ΋ࠓͷαʔϏε͸͜ΕͰ͍͍ͷͩΖ͏͔ʁ • ίʔυ΋αʔϏε΋ཧ૝తͳঢ়ଶʹͨ͠ɺ
 Զͨͪͷߟ͑ͨ࠷ߴͷΫοΫύουʹ͠Α͏ w Α͠ϑϧεΫϥονͰॻͧ͘
20. ϦχϡʔΞϧେࣦഊ
21. Կ͕ىͬͨ͜ͷ͔ ʮαʔϏεͷίΞόϦϡʔΛநग़͢Δʯ ʮ៉ྷͳίʔυͰΠν͔Βॻ͖௚͢ʯ ͷ྆ํΛಉ࣌ʹ΍Ζ͏ͱͨ͠ ˠ͍ͭ·Ͱܦͬͯ΋࣮૷͕ऴΘΒͳ͍
22. ࢓༷ͷ੔ཧͱ
    ϦϑΝΫλϦϯάΛ
    ಉ࣌ʹ΍Βͳ͍ํ͕͍͍ ֶͼ
23. ख஗Εʹͳ͔ͬͯΒ
    ΍Βͳ͍ ֶͼ
24. ೥ͷ
    3BJMT
    Ҡߦ͸
 ͳͥ͏·͍ͬͨ͘ͷ͔ ΤϯδχΞ5ਓ Rails ʹৄ͍ࣾ͠һ 0ਓ ͦΕ΄Ͳ೔ຊͰྲྀߦͬͯͳ͍
25. ౰࣌ͷؔ܎ऀͷূݴ • αʔϏεͷػೳ͕·ͩগͳ͔ͬͨ • ͢Ͱʹ΅Ζ΅Ζ͔ͩͬͨΒɺ
 ͦΕҎ্ࣦഊ͠Α͏͕ͳ͔ͬͨ • ͦ΋ͦ΋ͦΜͳʹ੒ޭ͍ͯ͠ͳ͔ͬͨ • ʢҠߦ͸͕ͨ͠ɺ౰ॳ͔ͳΓෆ҆ఆͩͬͨʣ • ए͔ͬͨ
26. Ͱ͸Ͳ͏͢Ε͹͍͍ͷ͔
27. ຊ౰ʹཉ͍͠΋ͷ͸
 Կͩͬͨͷ͔ʁ
28. ͳͥॻ͖௚͔ͨͬͨ͠ͷ͔ • αʔϏεͷܧଓతͳվળ͕͔ͨͬͨ͠ • ṖͷෳࡶͳϨΨγʔίʔυ͕ଟ͗ͯ͢
 ػೳͷվળ΍௥Ճ͕ࠔ೉
29. ϨΨγʔίʔυΛ
 શ෦ॻ͖௚͞ͳͯ͘΋
 ։ൃ଎౓Λམͱͣ͞
 ܧଓతͳվળ͕Ͱ͖ΔΑ͏ʹ
    ͢Ε͹͍͍ͷͰ͸
30. ϦχϡʔΞϧࣦഊ͕ੜΈग़ͨ͠
    $IBOLP
31. $IBOLP ຊ൪؀ڥͰͷτϥΠ&ΤϥʔΛࢧԉ͢Δ Rails ༻ gem Unit ͱ͍͏୯ҐͰطଘίʔυ΁ͷύονΛهड़ IUUQTHJUIVCDPNDPPLQBEDIBOLP
32. " # طଘͷίʔυ A ΛɺελοϑϢʔβͷΈʹରͯ͠ ϕʔλ൛ͷίʔυ B ʹஔ͖׵͍͑ͨ ͨͩ͠ɺB ͸๯ݥతͳ࣮૷ͳͷͰɺྫ֎͕ൃੜ͢Δ͔΋͠Εͳ͍ طଘͷ
    $POUSPMMFS
    ͷίʔυ ϕʔλ൛ͷίʔυ
33. ελοϑͳΒ# #Ͱྫ֎͕ى͖ͨΒ" ελοϑҎ֎ͳΒ" ϑϥάͰ෼ذ͍ͤͯ͘͞ͱίʔυ͕ԚΕ͍ͯ͘
34. ϕʔλػೳͷ
    6OJU طଘͷ
    $POUSPMMFS
    ͷίʔυ " # Chanko Ͱ͸ɺUnit ͱ͍͏ϑΝΠϧʹϕʔλػೳͷϩδοΫΛهड़͢Δ invoke ৚݅Λຬͨͨ͠৔߹ʹɺطଘϩδοΫ (A) ͷ୅ΘΓʹ Unit (B) ͕࣮ߦ͞ΕΔ B ͕ྫ֎Λىͨ͜͠৔߹͸ɺݩͷ A ͕࣮ߦ͞ΕΔͨΊɺϢʔβʹ͸Τϥʔ͕ฦΒͳ͍ JOWPLF
    ৚݅
35. ແࣄʹՁ஋͕ೝΊΒΕͨΒ ຊ൪ͷ඼࣭ͷίʔυʹ࢓্͛Δ طଘίʔυΛॻ͖׵͑ɺUnit ϑΝΠϧΛফ͢
 ʢ௨শ Un-chankoʣ
36. d
    ଟαʔϏε࣌୅
38. ΫοΫύου
 ຊମίʔυ ผϓϩδΣΫτ
    3BJMT
39. ϓϩδΣΫτͷ෼͔Εํ • ࠷ॳ͔ΒผϓϩδΣΫτͱͯ͠࡞ΒΕɺ ޙ͔Βຊମͱ࿈ܞͨ͠ύλʔϯ • ࠷ॳ͸ຊମͷҰ෦ͱͯ͠࡞ΒΕɺ
 ޙ͔Β෼཭ͨ͠ύλʔϯ
40. 8PSME`T
    MBSHFTU
    SBJMT
    NPOPMJUI
    Λ୤٫͍ͨ͠
41. ϓϩδΣΫτ෼ׂํ਑ • ৽نαʔϏεΛ࡞Δͱ͖ • ຊମͱີ݁߹ͤ͟ΔΛಘͳ͍΋ͷ͸ຊମͰ࣮૷ • ͦ͏Ͱͳ͍΋ͷ͸࠷ॳ͔ΒผϓϩδΣΫτͰ • طଘαʔϏε • ෼ׂՄೳͳ΋ͷ͸ॱ࣍෼ׂ͍ͯ͘͠
42. ʙ
    αʔϏεͷ෼ׂ
43. IUUQUFDIMJGFDPPLQBEDPNFOUSZ ͱͯ΋͍͍هࣄɺ͓͢͢Ί
44. ʮຊ౰͸Կ͕͍ͨ͠ͷ͔ʯΛݟۃΊΔ • γϯϓϧͳ࡞Γʹม͍͑ͨ • ෆཁͳίʔυ͕ॏͳΓɺಈ࡞͕஗͘ͳͬ ͍ͯΔͱ͜ΖΛղফ͍ͨ͠ • ৽͍͠ϥΠϒϥϦɺ৽͍ٕ͠ज़ΛऔΓ ࠐΊΔΑ͏ʹ͍ͨ͠
45. େࣄͳ͜ͱ
    Ұͭͣͭ΍Δ
46. ೋஈ֊ͷΞϓϦέʔγϣϯ෼཭ 1.ΫοΫύουຊମΛ fork ͠ɺෆཁ෦෼ Λૈํফͯ͠ςετΛ௨͢ 2.rails new ͨ͠৽نϓϩδΣΫτʹ
 ࣸܦͯ͠ςετΛ௨͢
47.  ຊମίʔυΛ
    GPSL
     ෆཁͳ෦෼Λૈํ࡟আ
     ςετΛ௨͢ ୈஈ֊
48. ͜ͷ࣌఺Ͱ͸ • ʮ͓͍͍݈͠߁ʯ͚ͩͷςετ࣮ߦɺ
 σϓϩΠ͕Մೳʹͳͬͨ • ͜Ε͚ͩͰ΋े෼ࣄۀతͳԸܙ͕͋Δ • ফ͖͠Εͳ͔ͬͨґଘϥΠϒϥϦɺ
 ϞϯΩʔύον౳͕ଟ਺࢒͍ͬͯΔঢ়ଶ • ςετ࣮ߦ͕஗͔ͬͨΓɺϨʔϧ͔Β
 ͸ͣΕͨΓ͍ͯ͠Δͷ͕໰୊
49. SBJMT
    OFX
    ͨ͠৽نίʔυϕʔεʹ
    ϩδοΫΛҠ২͍͖ͯ͠ɺ
    طଘͷςετ͕௨Δ͜ͱΛ໨ࢦ͢ ୈஈ֊
50. ஫ҙ఺ • ϩδοΫ͸Ҡಈ͢Δ͚ͩ • ϦϑΝΫλϦϯάͨ͘͠ͳͬͯ΋
 զຫ͢Δ • ςετΛ௨աͤ͞Δ͜ͱʹूத
51. ʮ͓͍͍݈͠߁ʯ෼཭੒ޭ͔Βͷֶͼ • ϑϧεΫϥονͰॻ͖௚͞ͳ͔ͬͨ • ࢓༷มߋ΍ϦϑΝΫλϦϯάΛߦΘͣɺ ෼཭͚ͩΛߦͬͨ • খن໛ʹগͣͭ͠ਐΊ͍ͯ͘͜ͱͰɺ ͦΕͧΕͷஈ֊ͰࣄۀతͳϝϦοτΛ ڗडͰ͖ͨ
52. ෼཭ʹΑΔԸܙ • ΫοΫύουຊମ • ࣄۀͻͱͭ෼ίʔυ͕খ͘͞ͳͬͨ • ͓͍͍݈͠߁ • Ϩʔϧʹ৐ͬͨී௨ͷ
 Rails ΞϓϦέʔγϣϯʹͳΕͨ • ܰྔͰϞμϯͳ։ൃ؀ڥʹͳͬͨ
53. ίʔυ඼࣭
54. ίʔυ඼࣭͸Ϗδωεʹ Өڹ͢Δ͔ʁ
55. ΫοΫύουͷ౴͑
    :&4
56. ίʔυͷ඼࣭ • Մಡੑ • ϝϯςφϯεੑ • όάͷ༗ແ • ηΩϡϦςΟ
57. ίʔυͷ඼࣭͕Өڹ͢Δ΋ͷ • ։ൃޮ཰ • ଐਓੑ wίʔυͷण໋
58. Ͳ͜·Ͱ΍Δ΂͖͔ʁ ΍Γ͗͢ͳ͍ ʮ៉ྷͳίʔυʯΛॻ͘͜ͱࣗମ͕໨తͰ͸ͳ͍ ࣄۀϑΣʔζʹͱͬͯඞཁͳ඼࣭·ͰΛ໨ࢦ͢
59. ίʔυϨϏϡʔ • ࣭ͷߴ͍ίʔυϨϏϡʔ͕ίʔυ඼࣭ Λ͋Δఔ౓୲อ͢Δ • ෛͷҨ࢈Λ࢒͠ʹ͘͘ͳΔ
60. ίʔυϨϏϡʔΞϯνύλʔϯ • ࠣࡉͳจ๏ͷ޷ΈͰᎍΊΔ • ΠϯσϯτɺׅހͳͲ • ͱʹ͔͘ෆໟ
61. ίʔυن໿͕͋Δͱ
    ίʔυϨϏϡʔͷޮ཰͕
    ྑ͘ͳΔ ֶͼ
62. IUUQTHJUIVCDPNDPPLQBETUZMFHVJEF
64. ಛ௃ ͦΜͳΜͲͬͪͰ΋͍͍ͩΖͱ ͍͏ͷ΋݁ߏܾΊͯΔ
65. ೥͘Β͍ӡ༻ͯ͠Έͯ • ࠷ॳ͸൓ରҙݟ΋ଟ͔ͬͨʢ๻΋ʣ • ϏδωεͷίʔυϨϏϡʔͳͷʹจ๏ ͷ͠ΐ͏΋ͳ͍࿦૪͕ల։͞ΕΔɺ
 Έ͍ͨͳͷΛݟ͔͚ͳ͘ͳͬͨ • จ๏ͷ࿦૪͸ελΠϧΨΠυͷํͰ
 ΍Ε͹Α͍ • ͋ͬͯΑ͔ͬͨελΠϧΨΠυ
66. Πϯϑϥͷ࿝ٺԽ
67. 
    %$
    
    "84
68. 
    &$
    $MBTTJD
    
    71$
69. ೋ౓ͷʮશ୆࡞Γ௚͠ʯΛܦͯ • ໾ׂͷΑ͘Θ͔Βͳ͍
 Ṗͷαʔό͕౫ଡ͞Εͨ • શαʔό͕ Infra as Code Խ͞Εͨ • Ͳ͘͞͞Ͱ OS ΍֤छύοέʔδ͕ ΞοϓσʔτͰ͖ͨ
70. Πϯϑϥ࿝ٺԽ໰୊ • ͢Ͱʹଘࡏ͠ͳ͍αʔόͷ Puppet • OS ΍ϛυϧ΢ΣΞ͕ݹ͍·· • ؀ڥ͕ݹͯ͘ੈ͔ؒΒִ཭͞ΕΔ
71. Πϯϑϥ࿝ٺԽͷಛ௃ • ಈ͍͍ͯ͑͞Ε͹ɺΞϓϦέʔγϣϯ ίʔυ΄Ͳ͸࿝ٺԽ͕໰୊ʹ
 ͳΓʹ͍͘ • େ෯ͳόʔδϣϯΞοϓ͸େม͔ͭ࣌ ͕͔͔ؒΔͷͰɺඞཁʹͳ͔ͬͯΒ
 ಈ͖࢝ΊΔͷͰ͸஗͍
72. ࣜ೥ભٶ IUUQTKBXJLJQFEJBPSHXJLJਆٶࣜ೥ભٶ
73. ࣜ೥ભٶ ਆٶࣜ೥ભٶ͸ɺਆٶʢҏ੎ਆٶʣʹ͓͍ͯߦΘΕΔࣜ೥ભ ٶʢఆظతʹߦΘΕΔભٶʣͰ͋Δɻ ਆٶͰ͸ɺݪଇͱͯ͠20೥͝ͱʹɺ಺ٶʢߖେਆٶʣɾ֎ٶ ʢ๛डେਆٶʣͷೋͭͷਖ਼ٶͷਖ਼఼ɺ14ͷผٶͷશͯͷ఼ࣾ Λ଄Γସ͑ͯਆ࠲Λભ͢ɻ IUUQTKBXJLJQFEJBPSHXJLJਆٶࣜ೥ભٶ
74. ࣜ೥ભٶͷ͕͍͜͜͢͝ • ଱༻೥਺ͷ୹͍ݐஙํࣜͳͷʹ
 ҏ੎ਆٶ͸͓Αͦ1300೥ଘࡏ͍ͯ͠Δ • 7ੈلͷ໻ੜݐஙͷٕज़͕ݱ໾Ͱ
 ఻ঝ͞Ε͍ͯΔ • ભٶͷ༻ࡐͱͳΔ໦ΛҭͯΔͷʹ
 200೥Ҏ্͔͔Δ
75. ࡞Γ௚͢͜ͱΛ
 લఏʹ͢Δ͜ͱͰ
 ௕ण໋Խ ֶͼ
77. *OGSB
    
    *OGSB • CentOS 6.2 -> Ubuntu 14.04 (16.04) • Puppet -> Itamae • VPCωοτϫʔΫͷ࠶ઃܭ • ֤छύοέʔδɺϛυϧ΢ΣΞͷ
 όʔδϣϯΞοϓ • ͦͷଞϨΨγʔͷ࡮৽
78. Πϯϑϥࣜ೥ભٶ • ৽͘͠࡞Δαʔό͸ infra2 Ͱ
 ϓϩϏδϣχϯά͢Δ • طଘͷαʔό΋গͣͭ͠ infra2 Ͱ
 ࡞Γ௚͍ͯ͘͠
79. ·ͱΊ
80. େલఏʢ࠶ʣ • ࣄۀ͸มԽ͢Δ • ૊৫͸มԽ͢Δ • ϓϩμΫτ΍ίʔυʹ͸ण໋͕͋Δ • ։ൃϦιʔε͸༗ݶͰ͋Δ
81. ௕ੜ͖͢ΔࣄۀͷͨΊʹ
 ٕज़͕Ͱ͖Δ͜ͱ • ඼࣭΍৽͠͞Λอͭ͜ͱࣗମΛ
 ࢓૊ΈԽ͢Δ • ख஗ΕʹͳΔલʹগͣͭ͠΍Δ • ࡉ͔͘੒ޭମݧΛ࡞ΓɺΞοϓσʔτ ͷՁ஋Λ૊৫ʹ࣮ײͤ͞Δ