“…There is also a large body of literature on content caching in traditional network architectures (see, e.g., [8,14,16,17,20,21,23,26,29,32,33,35,37]). Content caching has been an integral component of Internet-based services for many years, and this has been reflected by the proliferation of content delivery networks (e.g., [3,4,11,27,28,30]).…”