Don't Make Me Wait! A Primer on Site Speed

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Presentation on site speed and its importance given to the North Phoenix/Scottsdale - Arizona WordPress Group on Thursday, August 15th, 2013.

Presentation on site speed and its importance given to the North Phoenix/Scottsdale - Arizona WordPress Group on Thursday, August 15th, 2013.

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    Don't Make Me Wait! A Primer on Site Speed Don't Make Me Wait! A Primer on Site Speed Presentation Transcript

    • A Primer on Site Speed Don’t Make Me Wait! Joe Fleming @w33ble joe@wpcurrent.com
    • Who? ● Web Developer (Node.js, PHP) ● Community Activist ● Owner, Ansible Consulting ● Creator, WPCurrent.com
    • Before we begin... ● OpenHackPHX.com / @openhackphx ○ Code together, on anything, in Phoenix ○ OpenHack #003 - August 29th, Gangplank Chandler ● http://nextplex.com/phoenix-az ○ Calendar of tech-related events ● Phoenix Mobile Festival - August 24th ● Desert Code Camp - November 9th
    • Site Speed
    • Speed Matters Google ● Page load, 400ms to 900ms (+500ms) ● Decreased traffic and ad revenues by 20% Amazon ● Artificially increased page loads by 100ms ● Every 100ms caused 1% sales decrease Source: http://www.svennerberg.com/2008/12/page-load-times-vs-conversion-rates/
    • Glasses Direct ● Conversion rate drops by 6.7% for each additional second ● 47% of consumers expect page load of 2 seconds or less Speed Matters Sources: http://blog.tagman.com/2012/03/just-one-second-delay-in-page-load-can-cause-7-loss-in-customer-conversions/ http://blog.kissmetrics.com/wp-content/uploads/2011/04/loading-time-sml.jpg
    • How?
    • ● Faster Servers ○ CPU power ○ I/O latency and speed ● Dedicated Resources ○ VPS ○ Dedicated hardware ● Better Network Connection Increasing Speed
    • ● Separating Concerns ○ Dedicated hardware ● Faster Software Platforms ○ Faster languages ○ Specialized software ● CDN ● Lazy Loading Content Increasing Speed
    • ● Making software do less ○ Less plugins ● Caching Increasing Speed
    • Caching
    • Understanding Caching User Server Wordpress Site Logic Read Database Generate HTML Output
    • Understanding Caching User Server Wordpress Site Logic Read Database Generate HTML Output Cache? Save Cache Yes No
    • Options
    • ● Server Caching ○ Varnish ○ APC ● DNS Caching ● Caching Plugins ○ WP Super Cache (Downloads: 4,823,139) ○ W3 Total Cache (Downloads: 2,461,049) ○ Quick Cache (Downloads: 450,960) Caching Options
    • ● Server Caching ○ Varnish ○ APC ● DNS Caching ● Caching Plugins ○ WP Super Cache (Downloads: 4,823,139) ○ W3 Total Cache (Downloads: 2,461,049) ○ Quick Cache (Downloads: 450,960) Caching Options
    • Demo Time
    • Questions? Joe Fleming @w33ble joe@wpcurrent.com