Web Performance

  • Why “Web Performance”? 
  • We're getting used to the web as a tool for our day-today tasks 
  • We all want a nice user experience 
  • We won't tolerate slow pages (we have options) 
  • 500 ms slower = 20% drop in traffic (Google) 
  • 100 ms slower = 1% drop in sales (Amazon)

Web Performance Best Practices

  • Optimize caching 
  • Minimize round trip times 
  • Minimize request overhead 
  • Minimize payload size 
  • Optimize browser rendering


  • PageSpeed from Google 
  • YSlow from Yahoo

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