Velocity 2010: Performance Impact, Part Two: More Findings from the Front Lines of Web Acceleration

Web Performance and key business metrics
Part II: More Findings from the Front Line of Web Acceleration

What do we know?
© 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. http://www.webperformancetoday.com/2010/06/15/everything-you-wanted-to-know-about-web-performance/

Big, high-traffic site
100M impressions a day
8,000 searches a second
20-29M unique visitors a month
100M products
16 month re-engineering
Page load from 6 seconds to 1.2
Uptime from 99.65% to 99.97%
10% of previous hardware needs
http://en.oreilly.com/velocity2009/public/schedule/detail/7709 Shopzilla had another angle

What they did
Combining multiple CSS and JavaScript files to reduce external page calls.
Serving static content from a domain without cookies.
Leveraging browser and server-side caching wherever possible.
Compressing image file sizes on output, and serving .png wherever possible.
Asking rich media vendors and the Internet ad industry at large to take performance considerations into account when building and serving rich media ads. Any improvements made will ultimately benefit the advertiser, the server, the publisher and the user.

© 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. ATTENTION ENGAGEMENT BUSINESS METRIC NEW VISITORS GROWTH BOUNCE RATE LOSS CONVERSION RATE ORDER VALUE x TIME ON SITE PAGES PER VISIT NUMBER OF VISITS SEARCHES TWEETS MENTIONS ADS SEEN SEARCH IMPACT AD CLICKS USERS Productivity and Satisfaction

© 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. Strangeloop Analytics Visitor Web server Decide whether to optimize Insert segment marker Normal content Accelerated Unaccelerated Optimize? Receive page Process scripts Send analytics

Analytics

Acceleration

Examples: Complexity
493,623,345 Page Views
123,876 Individual Pages
52,865 Different Landing Pages
10 Major Browsers (110 different version)
9 Average Pages Views/visitor

What is accelerated
Optimize Caching
Minimize Roundtrips
Minimize Payload Size
Optimize Browser rendering
Optimize Images
Automatically rewrite to a CDN
Flush the buffer early
Preloading
© 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. Input What we did Output URL Browser Users flow Other Users Flow

Accelerated © 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. 58 roundtrips  5 roundtrips Payload Reduced 78% 57 roundtrips  4 roundtrips Payload Reduced by 86% First Time Visitor Repeat Visitor Before Strangeloop After Strangeloop

Individual Site Data

Business Impact © 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. Average Order size Conversion More Likely to buy on first visit More Likely to return for a second visit 6% 9% 29% 38%

Aggregated Data: Trends

Example: Landing Pages
Entry to a flow
First page matters
Landing page performance is very impactful to your business metrics

Is this project worth doing? © 2010 Strangeloop Networks Strangeloop. Faster Websites. Automatically. http://www.webperformancetoday.com/2010/06/23/the-performance-metrics-project/ http://bit.ly/anuQ22

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Velocity 2010: Performance Impact, Part Two: More Findings from the Front Lines of Web Acceleration

by Strangeloop on Jun 23, 2010

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Velocity 2010: Performance Impact, Part Two: More Findings from the Front Lines of Web Acceleration Presentation Transcript