CDN performance: Downloading jQuery from Google, Microsoft, and Edgecast CDNs

http://royal.pingdom.com/2010/05/11/cdn-performance-downloading-jquery-from-google-microsoft-and-edgecast-cdns

by hamstersoup • 16 years ago

16 5 16 years ago

royal.pingdom.com

PanMan• 16 years ago

While interesting (and different results than I expected), I would say uptime here is even more important than access times: I'd rather have all my visitors wait 0.04 sec more, than a small percentage not having the page work at all. Another issue off course is that the files will be cached if your users have visited a site that uses the same CDN. I would guess that the Google CDN is most widespread, and a local cache hit is always faster than a CDN.

jdbeast00• 16 years ago

also dont forget the saved dns lookup if the user has recently hit any file from the same host

dedward• 16 years ago

Curious - considering that these companies pay for this content and bandwidth - are they actually offerring it up for public use, or is this just leeching off them?

The speed benefit is probably non-existant for something small like jquery - some simple far-future expires headers and proper cache management and site engineering will take care of that.

Further - including scripts from foreign sources in your pages also means you are trusting them to be secure - if that script is compromised, every site using it could be hijacked.

chime• 16 years ago

I know Google offers it for free: http://code.google.com/apis/ajaxlibs/

altano• 16 years ago

Microsoft too:

http://weblogs.asp.net/scottgu/archive/2009/09/15/announcing...

http://www.asp.net/ajaxlibrary/cdn.ashx

CDN performance: Downloading jQuery from Google, Microsoft, and Edgecast CDNs

Related Stories