On the sensitivity of cooperative caching performance to workload and network characteristics

Abstract

An overview is given on a few important results concerning cooperative caching performance. First, it is shown that cooperative caching is only effective when the average access density is relatively high. Second, the effectiveness of cooperative caching decreases as the skew in object popularity increases. Higher skew means that only a small number of objects are most frequently accessed reducing the benefit of larger caches, and thus of cooperation.