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Optimise your home page (fast as lightning)
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Peter Hedenskog
November 04, 2014
Technology
1
47
Optimise your home page (fast as lightning)
A Cybercom sponsored talk I did in Karlskrona Sweden about making your pages as fast as possible.
Peter Hedenskog
November 04, 2014
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Transcript
peter.hedenskog@cybercom.com Optimera er hemsida 2014-11-04
Peter Hedenskog web performance geek
None
None
The secret
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faster websites makes less money
faster websites makes less money more
“We made the new platform 60% faster and this resulted
in a 14% increase in donation conversions.”
For every 1 second of improvement Walmart experienced up to
a 2% increase in conversions. For every 100 ms of improvement, Walmart grew incremental revenue by up to 1%
Staples shaved 1 second off median, 6s off 98th percentile,
conversions improved 10%
“Over time we found a strong correlation between site speed
and buyer purchases per week”
“A slow site impacts the brand” Tammy Everts
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http:// www.peterhedenskog.com/ blog/2014/09/more-speed- more-money/
“We must deliver and render the above the fold (ATF)
content in under one second, which allows the user to begin interacting with the page as soon as possible.”
Why?
< 0.1 second - instant < 1.0 second - flow
=>10 seconds - lost Robert B. Miller - Response Time in Man- Computer Conversational Transactions (1968) The brain
Context
“Smart phone users are more tolerant to slow sites”
We accept slower page load time when we go to
checkout.
but …
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The Performance Golden Rule!
“80-90% of the end-user response time is spent on the
frontend.” Steve Souders - Yahoo/Google/Fastly Tested top 50K Alexa websites
front end dev
front end dev
front end dev
front end dev
front end dev
With great power …
comes great responsibility!
Web performance 2014
“I like thinking big.” Donald Trump
“Think small” Peter Hedenskog
What?
super computers
super fast internet
remember
mobile phones
data
the city
“Think small” Peter Hedenskog
minimize
combine
avoid requests
no requests
above the fold
Web performance in practice
None
How?
None
s Web perf tool
None
Web perf tool
BFF
Integrate performance tools into continuous delivery
Web performance in practice 2
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None
communication
The boss
Visualize
The boss understands red, yellow and green
1200 ms
red 1200 ms
yellow 1200 ms
green 1200 ms
None
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business
the problem solver
the performance budget
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summary
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small
None
None
None
None
Thank you! Peter Hedenskog @soulislove