Reply #44: OK, now that I sort of understand this, my question is:

[Duer 157099]

why does DU need to use it?

I can understand why an ISP would think they need it, because it reduces their overall bandwidth, by delivering "cached" content to their users, instead of having the make a fresh request each time a page is requested.

But why would DU need to deliver cached content from the Internet? I can see why they would deliver their own cached content, but the rest of the net?

Maybe they don't, maybe the software has that built in capability, so that ISPs can deploy it that way, but for a place like DU, they can still use it in a more pared down fashion.

Am I understanding this correctly? Anyone?