Rails高速化戦略 / Speeding Up Rails

Roppongi.rb#1( http://roppongirb.connpass.com/event/33502/ ) での発表スライドです。

- 本発表内容をまとめたブログ記事はこちら: http://blog.toshimaru.net/roppongirb-speeding-up-rails/

Transcript

1. Rails
   ߴ଎Խઓུ
   2016.7.14 Roppongi.rb #1
   Toshimaru
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2. self.introduction
   • name: Toshimaru
   • Github: tohimaru
   • Twitter: @toshimaru_e
   • ! Roppongi.rb Organizer
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3. Rails (Ruby)
   ஗͍ΑͶ
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4. Go ࢖͓͏
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5. ׬
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6. Ͱ΋Rails
   ࢖͍͍ͨΑͶ
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7. begin
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8. جຊฤ
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9. Ruby Version Up
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10. Ruby Version History
    • 2013.2: Ruby 2.0
    • 2013.12: Ruby 2.1
    • 2014.12: Ruby 2.2
    • 2015.12: Ruby 2.3
    • 20xx: Ruby 3.0
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11. Roppongi.rb #1 11
    

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12. Ruby 3 x 3
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13. ͱ͋ΔRailsΞϓϦͷ৔߹
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14. Roppongi.rb #1 14
    

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15. Ruby 2.0 => 2.1
    Ruby Version Up ͚ͩͰ
    Ϩεϙϯε଎౓͕໿2ഒ޲্
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16. Ruby Version Up
    ΞϓϦέʔγϣϯίʔυมߋθϩͰ΋1
    Rubyόʔδϣϯ্͛Δ͜ͱͰ଎౓վળ
    1 ͨͩ͠RubyόʔδϣϯࠩҟʹΑΔඇޓ׵ੑΛղফ͢ΔͨΊͷมߋ͸ඞཁ
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17. What about Rails?
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18. Roppongi.rb #1 18
    

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19. Roppongi.rb #1 19
    

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20. Roppongi.rb #1 20
    

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21. ࣃΛ৯͍͠͹ͬͯ
    Rails/RubyΛ
    όʔδϣϯΞοϓ!
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22. What about Rails?
    Rails ஗͘ͳͬͯ΋
    Ruby ͸଎͘ͳ͍ͬͯΔ
    ͜ΕͰτϯτϯͩΖ, Φʔέʔ❓
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23. ϘτϧωοΫΛ௵͢
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24. ਪଌ͢Δͳ
    ܭଌͤΑɹ
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25. Find bottleneck
    • NewRelic
    • rack-mini-profiler
    • rack-lineprof
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26. ActiveRecord Optimization
    ! ໰୊ൃݟܕ
    • bullet: Kill N+1 issue!
    • activerecord-cause: Logs where ActiveRecord
    actually loads record
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27. ActiveRecord Optimization
    ! DBεΩʔϚ࠷దԽܕ
    • flag_shih_tzu: Bit fields for ActiveRecord
    • counter-cache: cacheing count query result
    • counter_culture: Better counter-cache
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28. ActiveRecord Optimization
    ⚡ ΫΤϦޮ཰Խܕ
    • activerecord-precount: Yet another
    counter_cache alternative.
    • activerecord-import: bulk inserting data
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29. ΫΤϦΛҙࣝͯ͠
    ActiveRecord
    ࢖͍͜ͳͦ͏
    by ࿝֐
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30. Less rendering partials
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31. N+1 partial rendering
    <%# views/items/index %>
    <% @items.each do |item| %>
    <%= render item %>
    <% end %>
    <%# views/items/_item %>
    
    <%= item.name %>
    <%= link_to 'Show', item %>
    <%= link_to 'Edit', edit_item_path(item) %>
    <%= link_to 'Destroy', item, method: :delete %>
    
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32. Log with N+1 rendering
    Processing by ItemsController#index as HTML
    Rendering items/index.html.erb within layouts/application
    Item Load (0.3ms) SELECT "items".* FROM "items"
    Rendered items/_item.html.erb (0.5ms)
    Rendered items/_item.html.erb (0.3ms)
    ...snip...
    Rendered items/_item.html.erb (0.5ms)
    Rendered items/_item.html.erb (0.3ms)
    Rendered items/index.html.erb within layouts/application (57.7ms)
    Completed 200 OK in 80ms (Views: 77.1ms | ActiveRecord: 0.3ms)
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33. Collection rendering
    <%# views/items/index %>
    <%= render @items %>
    <%# views/items/_item %>
    
    <%= item.name %>
    <%= link_to 'Show', item %>
    <%= link_to 'Edit', edit_item_path(item) %>
    <%= link_to 'Destroy', item, method: :delete %>
    
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34. Log without N+1
    rendering
    Processing by ItemsController#index as HTML
    Rendering items/index.html.erb within layouts/application
    Item Load (0.4ms) SELECT "items".* FROM "items"
    Rendered collection of items/_item.html.erb [29 times] (6.9ms)
    Rendered items/index.html.erb within layouts/application (10.3ms)
    Completed 200 OK in 29ms (Views: 26.4ms | ActiveRecord: 0.4ms)
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35. [جຊฤ] ·ͱΊ
    • Ruby Version Up
    • ϘτϧωοΫ೺Ѳ => ௵͢
    • gemΛ༗ޮ׆༻ͯ͠ActiveRecord/ΫΤϦ࠷ద
    Խ
    • ύʔγϟϧϨϯμϦϯάΛݮΒ͢
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36. தڃฤ
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37. Rails caching
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38. 3 types of cacheing2
    1. Fragment Cache: View fragment caching.
    2. Action Cache: Controller's action caching
    (removed in Rails4).
    3. Page Cache: Static page caching (removed in
    Rails4).
    2 Caching with Rails: An overview — Ruby on Rails Guides
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39. 1. Fragment Cache
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40. 1. Fragment Cache
    • άϩʔόϧφϏɾαΠυόʔͳͲͷଟ͘ݺ͹Ε
    Δڞ௨ίϯςϯπʹ༗ޮ
    • ॏ͍ॲཧ͕૸ΔϏϡʔͷҰ෦෼Ͱ͋Ε͹͋Δ΄
    Ͳߴ଎Խ͕ظ଴Ͱ͖Δ
    • Advanced Usage: Russian Doll Caching
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41. 2. Action Cache
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42. 2. Action Cache
    • Rails4Ͱ࡟আ͞ΕͯgemԽ: actionpack-
    action_caching
    • ViewͷखલͷControllerͷActionࣗମͷॲཧ͕
    ॏ͍৔߹ʹ༗ޮ
    • cache_path ͰΩϟογϡΩʔΛΧελϚΠζ
    Մೳ
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43. 3. Page Cache
    • Rails4Ͱ࡟আ͞ΕͯgemԽ: actionpack-
    page_caching
    • Ωϟογϡର৅ͱͳΔControllerͷActionͷੜ
    ੒͢ΔHTMLΛ·Δͬͱ੩తϑΝΠϧʹు͖ग़
    ͢
    • ͦͷ੩తϑΝΠϧΛNGINXͳͲͷWeb Server/
    Reverse ProxyͰϋϯυϦϯά
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44. [தڃฤ] ·ͱΊ
    • FragmentCache Λ࢖ͬͯϏϡʔͷϨϯμϦϯ
    άΛߴ଎Խ
    • Controller ࣗମͷॲཧ͕ॏ͍ͳΒ
    ActionCache/PageCacheΛݕ౼
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45. ⚠ ஫ҙ
    • Ωϟογϡͯ͠΋ࠜͬ͜ͷ໰୊͸ফ͑ͳ͍
    • ΩϟογϡͷϥΠϑαΠΫϧ؅ཧ
    • ༻๏༻ྔΛकͬͯਖ਼͓͘͠࢖͍͍ͩ͘͞
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46. ্ڃฤ
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47. ੩తϑΝΠϧ഑৴
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48. NGINX
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49. CDN
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50. ͋Ε
    Railsͷ࿩͡Όͳ͘Ͷʁ
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51. Rails
    Web
    ߴ଎Խઓུ
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52. Roppongi.rb #1 52
    

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53. Roppongi.rb #1 53
    

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54. ϨΠςϯγʹෛ͚ͳ͍ϓϩτίϧ
    HTTP/2
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55. Before HTTP/2
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56. After HTTP/2
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57. HTTP/2
    • ϦΫΤετଟॏԽ
    • HTTP vs HTTPS — Test them both yourself
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58. Question
    ͋ͳͨ͸౒ྗͯ͠Ծʹαʔ
    όʔϨεϙϯελΠϜΛ1ms
    ʹͨ͠ͱ͠·͠ΐ͏ɻ
    े෼ʹ଎͘ͳͬͨͱݴ͑·͢
    ͔ʁ
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59. Answer
    ! No
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60. Ϣʔβʔͷମײ଎౓
    !
    Server-side response
    ➕
    Client-side Speed
    Roppongi.rb #1 60
    

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61. Rails5 on Heroku Ͱ
    HelloWorld App ͷ৔߹4
    4 PageSpeed Insights Λ࢖ͬͯܭଌ
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62. 80఺ҎԼ... !
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63. ⚡ AMP
    • Webߴ଎ԽͷϕετϓϥΫςΟεΛ٧ΊࠐΜͩ
    ࢓༷/੍ݶ
    • Why AMP is fast — Medium
    • Google AMP Cache: GoogleͰΩϟογϡͯ͠
    ίϯςϯπ഑৴Λݞ୅ΘΓ
    • => Google AMP CDN
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64. [্ڃฤ] ·ͱΊ
    • CDN Ͱίϯςϯπ഑৴Λ࠷దԽ
    • HTTP/2 ͰϨΠςϯγʹෛ͚ͳ͍
    • AMPʹΑΔWebϖʔδͷߴ଎Խ
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65. end
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66. ࢀߟࢿྉ
    • High Performance Rails (long edition) //
    Speaker Deck
    • RailsύϑΥʔϚϯεجຊͷΩ // Speaker Deck
    • 3x Rails // Speaker Deck
    • ΢ΣϒΛ଎͘͢ΔͨΊʹDeNA͕΍͍ͬͯΔ͜
    ͱ - HTTP/2ͱɺ͞Βʹͦͷઌ
    Roppongi.rb #1 66
    

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67. ࢀߟࢿྉ
    • Rails Upgrade Casual Talks // Speaker Deck
    • σβΠφʔ΍σΟϨΫλʔ΋஌͓͖͍ͬͯͨɺ
    ϖʔδදࣔ଎౓ͷߴ଎Խͷجຊ – Rriver
    • ep22 AMP | mozaic.fm
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