Performance is a Feature!
Aug 07, 2015
Why?
Save moneySave powerBad perf == brokenLost customers
Half a second delay caused a 20% drop in traffic (Google)
Internal L.O.B apps
Why?
“The most amazing achievement of the computer software industry is its continuing cancellation of the steady and staggering gains made by the computer hardware industry.”
- Henry Peteroski
“We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.“
- Donald Knuth
When?
In production
You won't see ANY perf issues during unit tests
You won't see ALL perf issues in Development