Your script just  killed my sitestevesouders.com/docs/fluent-spof-20120530.pptxDisclaimer: This content does not necessari...
SPOF
synchronous scripts blockall following elementsfrom renderingin all browsers
#fail
async#failasync           sync   async
Frontend SPOF
http://www.webpagetest.org/result/120529_41_HWV/
entire BODY blocked   from rendering
http://www.webpagetest.org/result/120529_41_HWV/
mysql>
mysql> select p.url, wptid
mysql> select p.url, wptidfrom pages as p, requests as r
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pa...
what’s your website’sweakest link?
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
Your Script Just Killed My Site
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Your Script Just Killed My Site

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All of us have a lurking failure in our websites: 3rd party scripts from ads, widgets, and analytics. How is it that one script can bring down your website?

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  • Herve Leger V Neck Steel Metallic Foil Dress
    http://www.etooks.com/products/Herve-Leger-V-Neck-Steel-Metallic-Foil-Dress.html
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  • http://www.flickr.com/photos/jocelynaubert/3100384270/
  • http://www.flickr.com/photos/darwinbell/465459020/
  • http://en.wikipedia.org/wiki/Single_point_of_failure
  • WidgetsAdsAnalytics
  • Later in the docs they talk about how the LATER resources are loaded async, but not this bootstrap script.All it takes is one.
  • http://httparchive.webpagetest.org/result/120401_40_WFQG/
  • http://httparchive.webpagetest.org/result/120515_5_4S4C/plusone.js and all.js are synchronous
  • http://httparchive.webpagetest.org/result/120515_0_DNT/glamadapt_jsrv.act is inserted by wChannelModule.act using document.writelikecool is ranked 11KGlam Media is “the leader in curated social media content”
  • http://httparchive.webpagetest.org/result/120301_AP_P4W3/rank #19Kall.js, widgets.js, eluminate.js all loaded sync
  • http://httparchive.webpagetest.org/result/120401_8H_VTA3/
  • http://httparchive.webpagetest.org/result/120315_VQ_QCZP/fonts
  • http://httparchive.webpagetest.org/result/120515_0_35V/Their own CSS file
  • http://www.flickr.com/photos/rusty-projector/225212919/Thanks for listening to my cautionary tale of dread and foreboding. But it’s not all doom and gloom.
  • There is a brighter future where snippets aren’t a frontend SPOF.
  • http://www.flickr.com/photos/darwinbell/465459020/
  • Your Script Just Killed My Site

    1. Your script just killed my sitestevesouders.com/docs/fluent-spof-20120530.pptxDisclaimer: This content does not necessarily reflect the opinions of my employer.
    2. SPOF
    3. synchronous scripts blockall following elementsfrom renderingin all browsers
    4. #fail
    5. async#failasync sync async
    6. Frontend SPOF
    7. http://www.webpagetest.org/result/120529_41_HWV/
    8. entire BODY blocked from rendering
    9. http://www.webpagetest.org/result/120529_41_HWV/
    10. mysql>
    11. mysql> select p.url, wptid
    12. mysql> select p.url, wptidfrom pages as p, requests as r
    13. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid and
    14. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid andrank < 20000 and
    15. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid andrank < 20000 andresp_content_type like “%script%” and
    16. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid andrank < 20000 andresp_content_type like “%script%” andtime > 10000 and
    17. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid andrank < 20000 andresp_content_type like “%script%” andtime > 10000 andrenderStart > 10000
    18. mysql> select p.url, wptidfrom pages as p, requests as rwhere p.pageid >= 844954 andp.pageid <= 1564447 andp.pageid = r.pageid andrank < 20000 andresp_content_type like “%script%” andtime > 10000 andrenderStart > 10000group by p.pageid;
    19. what’s your website’sweakest link?

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