Week 6

Week 6 Slides for UW Advanced Rails

Transcript

1. Questions from Week 5? 1
2. Week 6: Performance and Optimization Spring 2015 2
3. Why do we care? No one wants a slow website! Always Be Iterating! 3
4. Places to Check Caching ActiveRecord Optimization Gems 4
5. What is caching? 5
6. What is caching? Storing data in a single place to avoid unneeded requests 6
7. What is caching? There are only two hard things in Computer Science: cache invalidation and naming things. -- Phil Karlton 7
8. Fragment Caching 8 config/environments/development.rb
9. Fragment Caching 9 app/views/links/show.html.erb
10. Fragment Caching 10 app/views/links/show.html.erb
11. Fragment Caching 11 app/views/dashboards/all.json.jbuilder
12. Optimizing with Active Record Includes Indexes 12
13. Includes Active Record ensures that all of the specified associations are loaded using the minimum possible number of queries. 13
14. Indexing A database index is a data structure that improves the speed of operations on a database table 14
15. Third Party Help - Gems 15
16. Third Party Help - Gems rack-mini-profiler bullet brakeman rails_best_practices rubocop rubycritic 16
17. rack-mini-profiler 17 Gemfile config/initializers/rack_profiler.rb
18. rack-mini-profiler 18 Gemfile
19. bullet 19 Gemfile config/initializers/bullet.rb
20. bullet 20 app/controllers/dashboards_controller.rb
21. bullet 21
22. brakeman 22 Gemfile
23. rails_best_practices 23 Gemfile
24. rubocop 24 Gemfile
25. rubycritic 25 Gemfile