Web Caching and Replication

Chapter 18. Content Distribution Internetworking

Another extension of the use of forward proxies as well as CDNs is content distribution internetworking (CDI) [Biliris et al. 2001]. The goal of CDI is to allow collaboration between forward proxies and CDNs, as well as between individual CDNs, in improving access to certain Web content. By involving forward proxies and CDNs, the CDI model exhibits features of both caching and replication. Like replication, the CDI model leaves the content under complete control of the content provider. Participating CDNs also follow the usual replication model: they sell their services to content providers and try to improve delivery of this content to any client that requests it. On the other hand, participating ...