Turing - Performance

gistfile1.txt

# Performance

http://frontend.turing.io/lessons/module-4/intro-to-performance.html

## Agenda

- What are some strategies you use to make your websites performant?
- Take five minutes to think about this scenario:
  - I load a website. It's slow. Why's it slow?
  - Then, have students question me and investigate/troubleshoot the problem
- Talk about how performance is a game of tradeoffs
- Talk about how performance is a user experience problem
  - Slow train example (cost of upgrade vs cost of hiring ppl to go around handing out drinks)
- Talk about how performance is not a user experience problem
  - See: stock trading
- General themes in making things performant
  - Show progress
  - Don't do O(n^2) or O(n^n)
  - Only wait for the things you need right now (Lazy Loading)
  - Understand the tradeoffs between space and complexity/run time
  - Use slow resources efficiently
- Load up your fav heavy website and analyize the performance using chrome dev tools
- Go thru lesson
- Go on tangents about
  - Big O notation
  - Database queries
  - Network calls
  - Rendering bottlenecks
  -