RDB anti-pattern that Java engineer wants to know

Transcript

1. JavaΤϯδχΞʹ஌ͬͯ΄͍͠ RDBΞϯνύλʔϯ ++6(
   $$$
   
   4QSJOH

2. What is it? ࠓ೔Έͳ͞Μʹ࣋ͬͯؼͬͯ΄͍͜͠ͱ

3. What is it? σʔλϕʔεͷण໋͸ ΞϓϦέʔγϣϯΑΓ΋௕͍

4. What is it? ͦΜͳ௕͍෇͖߹͍ʹͳΔσʔλϕʔε ͷେ੾ͳࣄΛ͓఻͑͠·͢

5. What is it? ର৅ͷσʔλϕʔειϑτ΢ΣΞ

6. What is it? PostgreSQL 9.6ͱMySQL 5.7(InnoDB)ʹݶΔ ଞͷRDBͷ࿩͸͠·ͤΜ

7. What is it? RDBΞϯνύλʔϯ

8. What is it? RDBΞϯνύλʔϯ ↓ ޙʑʹۤ͠ΈΛੜΉ

9. What is it? RDBΞϯνύλʔϯΛ஌Δ

10. What is it? RDBΞϯνύλʔϯΛ஌Δ ↓ ಉ͡աͪΛ܁Γฦ͞ͳ͍

11. What is it? ࠓ೔͸RDBͷࣦഊྫΛ͝঺հ͠·͢

12. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

13. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

14. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢

15. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢

16. Mackerel

17. Mackerel

18. ͸ͯͳ͸஥ؒΛ୳ͯ͠·͢ curl -sIL mackerel.io | grep engineer

19. ࣗݾ঺հ ໊લɿીࠜɹ૖େʢͦͶɹ͚ͨͱ΋ʣ ೥ྸɿ32ࡀʢࡾਓͷࢠڙ͕͍·͢ʣ ৬ۀɿηʔϧεΤϯδχΞ ॴଐɿגࣜձࣾ ͸ͯͳʢMackerelνʔϜʣ ɹɹɹ೔ຊPostgreSQLϢʔβձ ɹɹɹɹɹதࠃࢧ෦ ࢧ෦௕ ɹɹٕज़తʹ͸LLܥݴޠͱ͔RDB͕޷͖Ͱ͢

20. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

21. None

22. σʔλϕʔεͷ໎ٶ 4PGUXBSF%FTJHOΛಡΜͰ͘Εʂʂ
    Ҏ্οʂʂʂʂ

23. σʔλϕʔεͷ໎ٶ σʔλϕʔεͷઃܭͷ࿩

24. σʔλϕʔεͷ໎ٶ demo=# SELECT delete_falg AS delete_flag FROM users GROUP BY

    delete_flag delete_flag ------------- 1 2 0 9 99 NULL (6 ߦ)

25. σʔλϕʔεͷ໎ٶ ▪࢓༷ॻ_20170513(1).xls 0: ະ࡟আ 1: ࡟আࡁΈ 2: ؅ཧऀʹΑΔڧ੍࡟আ 9: ຣফ

    99: Α͘Θ͔Βͳ͍ NULL: όάͰೖΔ

26. σʔλϕʔεͷ໎ٶ NFNP
    NFNP
    NFNP

27. σʔλϕʔεͷ໎ٶ NFNP
    NFNP
    NFNP NFNPͰ͸ͳ͘NFNPͷͱ͜Ζ͕ྺ࢙Λײͤ͡͞Δ

28. σʔλϕʔεͷ໎ٶ σʔλϕʔεͷ໎ٶͷ໰୊

29. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w

    ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍

30. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w

    ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍

31. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w

    ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍

32. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w

    ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍

33. σʔλϕʔεͷ໎ٶ w ෆద੾ͳ໊લͰ͸σʔλϕʔεͷςʔϒϧͷؔ࿈ੑ ΍ҙਤ͕ཧղͰ͖ͳ͍
    w ϦϨʔγϣφϧϞσϧΛج͍ͮͨઃܭ͍ͯ͠ͳ͍ͱ طଘͷศརͳπʔϧΛར༻ग़དྷͳ͍
    w อଘ͞Εͨσʔλ͕ਖ਼͍͔͠Ͳ͏͔͕൑அग़དྷͳ͍
    w

    ͲͷΑ͏ͳσʔλΛอଘ͠ɺͲͷΑ͏ͳσʔλΛ
 औΓग़ͤ͹͍͍͔Θ͔Βͳ͍

34. σʔλϕʔεͷ໎ٶ ࿦ཧ*%

35. σʔλϕʔεͷ໎ٶ ࿦ཧ*%
    ˣ
    ձһ*%Λྫʹ͠·͢

36. σʔλϕʔεͷ໎ٶ 

37. σʔλϕʔεͷ໎ٶ  ͔Β࢝·Δͷ͸ҰൠϢʔβ
    ͔Β࢝·Δͷ͸؅ཧϢʔβ

38. σʔλϕʔεͷ໎ٶ  Ϣʔβͷ౎ಓ෎ݝΛද͢

39. σʔλϕʔεͷ໎ٶ  ຊ౰ͷձһ*%

40. σʔλϕʔεͷ໎ٶ σʔλʹϩδοΫΛຒΊࠐΉͳͬʂ

41. σʔλϕʔεͷ໎ٶ σʔλʹϩδοΫΛຒΊࠐΉͳͬʂ
    ˣ
    σʔλΛσʔλͱͯ͠ಡΈऔΕͳ͍

42. σʔλϕʔεͷ໎ٶ ॲํᝦ
    w ΧϥϜΛਖ਼໊͘͠લΛ͚ͭΔ
    w σʔλͷ੹຿Λ෼͚Δ
    w มԽʹ߹ΘͤͯϦϑΝΫλϦϯά͢Δ

43. σʔλϕʔεͷ໎ٶ ॲํᝦ
    w ΧϥϜΛਖ਼໊͘͠લΛ͚ͭΔ
    w σʔλͷ੹຿Λ෼͚Δ
    w มԽʹ߹ΘͤͯϦϑΝΫλϦϯά͢Δ

44. σʔλϕʔεͷ໎ٶ ϦϑΝΫλϦϯάͷྫ

45. σʔλϕʔεͷ໎ٶ JE ໊લ ೥ྸ  ીࠜɹ૖େ   ીࠜɹኽָ 

     ીࠜɹᗅָ   ીࠜɹࡣָ  ݱঢ়

46. σʔλϕʔεͷ໎ٶ ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  ીࠜɹ૖େ  

      ીࠜɹኽָ     ીࠜɹᗅָ     ીࠜɹࡣָ    ཧ૝

47. σʔλϕʔεͷ໎ٶ JE ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  /6-- ીࠜɹ૖େ

     /6-- /6--  /6-- ીࠜɹኽָ  /6--
    /6--  /6-- ીࠜɹᗅָ 
    /6-- /6--  /6-- ીࠜɹࡣָ  /6-- /6-- ର৅ͷΧϥϜΛ௥Ճ

48. σʔλϕʔεͷ໎ٶ JE ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE   ીࠜɹ૖େ

         ીࠜɹኽָ      ીࠜɹᗅָ      ીࠜɹࡣָ    ର৅ͷΧϥϜΛ௥Ճ

49. σʔλϕʔεͷ໎ٶ Ͳ͏΍ͬͯ࿦ཧ*%Λ
    ৽͍͠ΧϥϜʹೖΕΔ͔

50. σʔλϕʔεͷ໎ٶ ϦϑΝΫλϦϯάख๏ͷྫ
    w */4&35΍61%"5&ͷ࣌ʹΞϓϦ͕ೖΕΔ
    w */4&35΍61%"5&ͷ࣌ʹτϦΨʔΛ࢖͏
    w Ծ૝ྻ΍7JFXΛ࢖͏

51. σʔλϕʔεͷ໎ٶ ձһJE ໊લ ೥ྸ ݖݶJE ౎ಓ෎ݝJE  ીࠜɹ૖େ  

      ીࠜɹኽָ     ીࠜɹᗅָ     ીࠜɹࡣָ    ཧ૝ͷ7JFXΛ࡞Δ

52. σʔλϕʔεͷ໎ٶ αʔϏεͷੑ࣭ʹ߹Θͤͯ
    ख๏ΛબͿ

53. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

54. ڧ͗͢Δ੍໿ σʔλϕʔε͸
    αʔϏεʹ༩͑ΔӨڹൣғ͕޿͍

55. ڧ͗͢Δ੍໿ ༩͑ΔӨڹൣғͷྫ
    w %#Λఀࢭ͢ΔͱαʔϏε͕ࢭ·Δ
    w มߋ͢Δͱෳ਺αʔϏεͷվम͕ඞཁ
    w σʔλ͸ৗʹ஝ੵ͞Ε͍ͯ͘

56. ڧ͗͢Δ੍໿ ࣌ؒܦաͰσʔλ͕੒௕͢Δ

57. ڧ͗͢Δ੍໿ ͭ·Γมߋ͕େม
    

58. ڧ͗͢Δ੍໿ ͭ·Γมߋ͕େม
    ˣ
    ͕࣌ؒܦͯ͹ܦͭ΄Ͳঢ়گ͕ѱԽ
    

59. ڧ͗͢Δ੍໿ ͔ͩΒͦ͜ਖ਼͍͠ઃܭʹҭͯΔ΂͖

60. ڧ͗͢Δ੍໿ ͦͷͨΊʹ3%#ͷػೳΛ׆༻͢Δ

61. ڧ͗͢Δ੍໿ ͦͷͨΊʹ3%#ͷػೳΛ׆༻͢Δ
    ˣ
    ͔ͦ͠͠Ε͕ཪ໨ʹग़Δ͜ͱ΋

62. ڧ͗͢Δ੍໿ 3%#ͷػೳʹґଘ͗͢͠Δͱ
    ͦΕ͸ڧ͗͢Δ੍໿ʹͳΔ

63. ڧ͗͢Δ੍໿ ڧ͗͢Δ੍໿ͷྫ
    w τϦΨʔ͕ଟ͘ͷ5"#-&ʹӨڹΛ༩͑Δ
    w ετΞυ͕ϩδοΫΛ࣋ͪ͗͢Δ
    w ϚςϏϡʔ΍%#
    -JOLͷଟ༻͗͢͠Δ

64. ڧ͗͢Δ੍໿ 3%#ͷػೳ͸ͱͯ΋ศར
    

65. ڧ͗͢Δ੍໿ 3%#ͷػೳ͸ͱͯ΋ศར
    ˣ
    ͔ۜ͠͠ͷ஄ؙͰ͸ͳ͍

66. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ

67. ڧ͗͢Δ੍໿ ॲํᝦ
    w ͦͷػೳΛར༻͢ΔظؒΛݕ౼͢Δ
    w ͦͷػೳͷӨڹൣғΛཧղ͢Δ
    w ຊ౰ʹ࠷దͳΞϓϩʔν͔໰͍௚͢

68. ڧ͗͢Δ੍໿ ॲํᝦ
    w ͦͷػೳΛར༻͢ΔظؒΛݕ౼͢Δ
    w ͦͷػೳͷӨڹൣғΛཧղ͢Δ
    w ຊ౰ʹ࠷దͳΞϓϩʔν͔໰͍௚͢

69. ڧ͗͢Δ੍໿ ਓ͸աڈͷ੒ޭମݧͷ
    όΠΞε͕͔͔Δ

70. ڧ͗͢Δ੍໿ ਓ͸աڈͷࣦഊମݧ΋
    όΠΞε͕͔͔Δ

71. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ

72. ڧ͗͢Δ੍໿ ઃܭͷόϥϯεײ͕֮େࣄ
    ˣ
    ଟ͘ͷઃܭΛݟͯཆ͏͜ͱ͕େࣄ

73. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

74. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹͱϞχλϦϯά

75. ؂ࢹ͞Εͳ͍σʔλϕʔε

76. ؂ࢹ͞Εͳ͍σʔλϕʔε

77. ؂ࢹ͞Εͳ͍σʔλϕʔε ͳΜͰςετॻ͘ͷʹ
    ϞχλϦϯά͠ͳ͍ΜͰ͔͢ʁ

78. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹ͸ࡾஈ֊͋Δ

79. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ

80. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ ࢮ׆؂ࢹ

81. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ νΣοΫ؂ࢹ

82. ؂ࢹ͞Εͳ͍σʔλϕʔε w͍ͪૣ͘ো֐ൃੜΛ֬ೝ͢Δ
    w෮چͷͨΊͷݪҼΛ֬ೝ͢Δ
    wঢ়گͷมԽΛ࣌ܥྻͰ؂ࢹ͢Δ͜ͱͰ Ϧιʔε؅ཧ΍ো֐ͷ༧ஹͷ೺Ѳ͢Δ ϞχλϦϯά؂ࢹ

83. ؂ࢹ͞Εͳ͍σʔλϕʔε

84. ؂ࢹ͞Εͳ͍σʔλϕʔε

85. ؂ࢹ͞Εͳ͍σʔλϕʔε Πϯϑϥ͸ੜ͖෺

86. ؂ࢹ͞Εͳ͍σʔλϕʔε Πϯϑϥ͸ੜ͖෺
    ˣ
    ೔ʑͷ੒௕ه࿥ΛݟΔ

87. ؂ࢹ͞Εͳ͍σʔλϕʔε աڈΛ஌Δ͜ͱͰ
    ࠓͷ৔ॴ͕Θ͔Δ

88. ؂ࢹ͞Εͳ͍σʔλϕʔε ࠓͱաڈͷࠩ෼
    

89. ؂ࢹ͞Εͳ͍σʔλϕʔε ࠓͱաڈͷࠩ෼
    ˣ
    ະདྷΛ஌ΔͨΊͷࡐྉ

90. ؂ࢹ͞Εͳ͍σʔλϕʔε ؂ࢹ͢΂͖߲໨
    w ౷ܭ৘ใ΍04ϦιʔεͳͲ3%#ͷঢ়ଶ
    w εϩʔΫΤϦϩά΍ΤϥʔϩάͳͲ
    w ෳ਺ͷ%#ΛॏͶͨൺֱ

91. ؂ࢹ͞Εͳ͍σʔλϕʔε ϞχλϦϯά͸վળͷҰา໨

92. ؂ࢹ͞Εͳ͍σʔλϕʔε ॲํᝦ
    w ద੾ʹϞχλϦϯάΛ͢Δ
    w ϞχλϦϯάπʔϧΛ׆༻͢Δ
    w վળͷͨΊͷҰา໨Λ౿Έग़͢

93. ͋͐͡Μͩ ̍ɹࣗݾ঺հ ̎ɹσʔλϕʔεͷ໎ٶ ̏ɹڧ͗͢Δ੍໿ ̐ɹ؂ࢹ͞Εͳ͍σʔλϕʔε ̑ɹ·ͱΊ

94. ·ͱΊ ۪ऀ͸ܦݧʹֶͿ
    ݡऀ͸աڈʹֶͿ

95. ·ͱΊ ΞϯνύλʔϯΛ஌Δ

96. ·ͱΊ

97. ·ͱΊ SQLΞϯνύλʔϯ͸ݫબ͞Εࣦͨഊू

98. ·ͱΊ SQLΞϯνύλʔϯ͸ݫબ͞Εࣦͨഊू ↓ DBͷϊ΢ϋ΢͕٧·໊ͬͨஶ

99. ·ͱΊ Ұ౓࡞ͬͨ%#͸ফͤͳ͍
    

100. ·ͱΊ Ұ౓࡞ͬͨ%#͸ফͤͳ͍
     ˣ
     ઃܭ͕େࣄ

101. ·ͱΊ σʔλϕʔεͷࢮ͸αʔϏεͷࢮ

102. ·ͱΊ σʔλϕʔεͷࢮ͸αʔϏεͷࢮ
     ˣ
     ղܾͰ͖Δਓ͸ӳ༤

103. ·ͱΊ %#ͷ໰୊͸๨Εͨࠒʹ΍ͬͯ͘Δ

104. ·ͱΊ

105. ·ͱΊ αʔϏε΍νʔϜΛकΔ

106. ·ͱΊ αʔϏε΍νʔϜΛकΔ
     ˣ
     ͦͷͨΊʹֶͿ

107. ·ͱΊ पғͷܦݧஊ͔ΒֶͿ
     

108. ·ͱΊ पғͷܦݧஊ͔ΒֶͿ
     ˣ
     ੵۃతʹίϛϡχςΟΛར༻͢Δ

109. ࢀߟࢿྉ ɾQPTUHSFTRMKQ
     4MBDL νϟοτϧʔϜ
     IUUQTQPTUHSFTRMIBDLFSTKQIFSPLVBQQDPN
     ɾNZTRMDBTVBM
     4MBDL νϟοτϧʔϜ
     IUUQTNZTRMDBTVBMTMBDLJOIFSPLVBQQDPN
     

110. ·ͱΊ 3%#ͷ஌ࣝ͸ण໋͕௕͍

111. ·ͱΊ 3%#ͷ஌ࣝ͸ण໋͕௕͍
     ˣ
     ֮͑Ε͹࢓ࣄͰ௕͍ؒ໾ʹཱͭ

112. ·ͱΊ lखΛಈ͔ͨ͠ਓ͚͕ͩੈքΛม͑Δz
     Š:BTVIJSP
     0OJTIJ

113. ·ͱΊ ΑΓྑ͍ઃܭΛ
     Ұॹʹߟ͑ͯߦ͖·͠ΐ͏

114. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ