Caching already happens through CDNs at the ISP level, such as through the Google Global Cache (YouTube), Netflix Open Connect. That roughly covers about half of network traffic.
Plus, running a squid proxy on 100 users isn't nearly as effective as it once was; pages contain far more dynamically generated content than they used to. Think about a Facebook News Feed or Twitter Stream.
Plus, running a squid proxy on 100 users isn't nearly as effective as it once was; pages contain far more dynamically generated content than they used to. Think about a Facebook News Feed or Twitter Stream.