Fast Rails (Beta)

This is a work-in-progress talk, subject to changes.

First given at RubySG's meetup on 27 Jan, 2015.

Transcript

1. Fast Rails
   (Beta)
   

   View Slide

2. Frontend
   Backend
   Database
   

   View Slide

3. This slide intentionally left blank.
   

   View Slide

4. Front End
   

   View Slide

5. PageSpeed!
   https://developers.google.com/speed
   !
   YSlow!
   http://yslow.org/
   

   View Slide

6. Asset Pipeline!
   Far Future Expires
   Minify JavaScript + CSS
   Minimize HTTP Requests
   Multiple Asset Hosts
   (http://api.rubyonrails.org/classes/ActionView/Helpers/AssetUrlHelper.html)
   

   View Slide

7. Compression!
   http://nginx.org/en/docs/http/ngx_http_gzip_module.html
   https://github.com/romanbsd/heroku-deflater
   

   View Slide

8. CDN!
   Static Assets
   Dynamic Content
   

   View Slide

9. Browser Caching!
   `expires_in`, `expires_now`, `fresh_when`, `stale?`
   (http://api.rubyonrails.org/classes/ActionController/ConditionalGet.html)
   

   View Slide

10. Assets Loading!
    Stylesheets at the Top
    JavaScripts at the Bottom (async)
    

    View Slide

11. Images!
    `gem install smusher`
    Lazy Load
    

    View Slide

12. FOUT!
    (Flash of Unstyled Text)
    https://github.com/typekit/webfontloader
    

    View Slide

13. Turbolinks!
    mmmm…
    

    View Slide

14. Backend
    

    View Slide

15. Update!
    Ruby 2.2.0
    Rails 4.2
    

    View Slide

16. Memory!
    Server
    Database
    

    View Slide

17. Background Jobs!
    Email/Image Processing
    

    View Slide

18. Data Storage!
    Save to S3?
    Delete from S3?
    

    View Slide

19. Caching!
    Russian Doll Caching
    Low-Level Caching
    

    View Slide

20. Views!
    helpers (inline) > partials > loop
    `render ‘article’, collection: @articles`
    

    View Slide

21. Fast Ruby!
    https://github.com/JuanitoFatas/fast-ruby
    

    View Slide

22. Fast Code!
    `exists` vs. `present?`
    Loop in Code vs. SQL
    

    View Slide

23. Development!
    `spring`, `guard`
    

    View Slide

24. Database
    

    View Slide

25. ActiveRecord!
    Foreign Keys, Composite Keys, SQL Explain
    `find`/`find_by`/`find_by_` vs. `where(..).take`
    

    View Slide

26. Indexes!
    Foreign Keys, Composite Keys, SQL Explain
    https://github.com/eladmeidar/rails_indexes
    

    View Slide

27. n+1!
    `gem install bullet`
    

    View Slide

28. The End
    (Beta)
    

    View Slide