The difference is that a caching proxy is a layer over the TCP/IP protocol. In other words, we're using a location-centric protocol to build a data-centric netw

The difference is that a caching proxy is a layer over the TCP/IP protocol. In other words, we're using a location-centric protocol to build a data-centric network. Now I'm not saying that this can't be done, it most certainly can. I'm saying that we would be able to, much easier, build a well-functioning, distributed data-centric network if the foundational protocol, on which we build the network ,is inherently data-aware and location-agnostic, instead of being location-aware and data-agnostic (as the TCP/IP protocol is).