Thread: Origin Pull vs. Pop Pull

We have been using CDN for some of our sites for 2+ years now... it works well in most cases... but it also depends on your exact needs. In some cases, a dedicated server is better... and also, don't forget about your transcoding (format change) needs - which may take some horsepower. You would normally transcode before you load the CDN.

Plus... you need to consider...


Origin Pull

- The content (video, or whatever), is pulled from your server on first use, then normally lives in the CDN for 24 hours (TTL).

- The first load of the content can be slow, as it goes from your server, into the CDN, then to the first user.

- The second and later views, as long as the TTL has not expired, are at full CDN speeds.

- This method is less expensive, and usually only has Bandwidth charges, and no storage charges.


POP Pull (or pre-load)

- The content (video, or whatever), is loaded into the CDN first. It lives on the CDN until you delete it (no TTL).

- The first view, and later views, are the same speed, as the content is already on the CDN.

- This method is more expensive, as you have Bandwidth charges, and also Storage charges.

I re-opened our CDN forum on ModMySite.. I had it offline for a while, as most of the contacts we had from non-current clients who were interested in it, in fact, were not serious about it... but maybe the interest is peaking again.

http://www.modmysite.com/cdn-content-delivery-network/

Warm regards,

Smoge

Note, as an example, RackSpace does not support POP PULL:

Please wait while we find an agent to assist you...
Welcome to The Rackspace Cloud. My name is Miguel S, may I have your first name and email address in case we get disconnected?
Miguel S: Welcome to Technical Support! My name is Miguel. How may I help you today?
Cloud Customer: Rob... support@mysitegroup.com
Cloud Customer: one question
Cloud Customer: your CDN
Cloud Customer: only ORIGIN PULL, or also supports POP-PULL (pre-load)
Miguel S: origin pull only, at the moment we do not support preloading or precaching onto the CDN, and there is a minimum ttl of one hour and there is no method to purge something from the existing cache

Cloud Customer: ok - thanks

Our offering, and others, does.

http://www.modmysite.com/cdn-content...y-network.html

Smoge