Before revision: An large number of different caching mechanisms have been previously proposed 1 , 3 , exploring different insertion and eviction policies , and the performance of networks of them have been analyzed in different ways. We review stationary Markovian models of caching networkswith independent incident (data) object demand processes and independent storing decisions (object insertion) and forwarding decisions (owing to cache misses) by the caches .
After revision: An large number of different caching mechanisms have been previously proposed 1 , 3 , exploring different insertion and eviction policies and their performance individually and as part of caching networks .