Webdev:Velocity 2009 Notes

• Metrics that Matter
  • Measure end user response time, not network or server time
  • Measure flows (registration, checkout, etc)

• Fixing Twitter
  • Make everything a queue
  • Use google analytics for outage page to track problems

• Shopzilla
  • Increased performance has a direct correlation with higher revenue and pageviews.
  • Averages don't mean anything, get the median and percentiles.

• Overall
  • Measure everything you can
  • IT & Webdev/engineering should overlap and have same goals