Drop Your Website Load Times Down a Waterfall
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As presented to the Atlanta HTML5 User Group on 6/12/2013.
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Drop Your Website Load Times Down a Waterfall
- 1. Drop Your Website Load Times Down A Waterfall @zoompf @cosjef
- 2. (In No Way) Certified Experts Billy Hoffman Founder, CTO @ Zoompf billy@zoompf.com @zoompf Jeff Costa Sales Engineer @ Akamai jecosta@akamai.com @cosjef
- 6. What is a Waterfall? • How to read one? • How to create one? Audience Waterfalls • Fields to use • Advanced options • Video Well-Known Waterfalls • Review Pizza Hut waterfall diagram Wicked Waterfalls • Waterfall anti- patterns • Don’t do these things. Agenda The Plan
- 7. Avoid data theft and downtime by extending the security perimeter outside the data-center and protect from increasing frequency, scale and sophistication of web attacks. Breaking Down A Web Request
- 8. What’s the Front End? Back-end Time to generate and send HTML Front-end Everything that follows
- 9. Important Timers Start Render OnLoad Event
- 10. Avoid data theft and downtime by extending the security perimeter outside the data-center and protect from increasing frequency, scale and sophistication of web attacks. Problems Latency: every request/response round trip incurs a latency penalty. Payload: page size increasing; last mile bandwidth varies wildly. Rendering: browser rendering and parsing takes time.
- 12. Make Fewer Round Trips
- 13. “The fastest request is the one you don't have to make.” -Steve Souders “Every HTTP request you make should be well justified, and not taken lightly.” -Jeff Costa
- 15. What Happens to the Waterfall?
- 16. SSL Latency
- 17. Errors Hurt You Twice
- 19. THANK YOU! Q? @zoompf @cosjef Billy Hoffman billy@zoompf.com Jeff Costa costa.jeff@akamai.com
Hinweis der Redaktion
- Igauzu Falls - Brazil
- Niagara Falls
- Niagara Falls
- Made up of the socket connection time, the time taken to send the HTTP request, and the time taken to get the first byte of the page. TTFB is everything after the HTTP request - the duration from the user making an HTTP request to the first byte of the page being received by the browser.
- Start Render: point of time when the browser starts to render and display the content - browser has enough info to start drawing the page.OnLoad Event: user perceives page is ready and can begin interacting with itDocument Complete:point of time when the browser finishes loading all content except objects that are triggered by Javascript execution
- Page size is increasing due to images, analytics, ads, social sharing.Delivering static content to the browser consumes >85% of page load time. Staticcontent is the biggest cause of poor performance in modern web applications.
- FEO techniques are designed to reduce page weight without changing visual quality or site functionality. Smaller stuff
- “Less Stuff”
- “Build It Faster”