CAHR: Centrality-Aware Hybrid Replacement in Information-Centric Network

10.29428/9789860544169.201801.0039

Hong-Bin Tsai；Chin-Laung Lei

Information-Centric Network ； Caching Strategy ； Replacement Policy

NCS 2017 全國計算機會議

2017（2018 / 01 / 01）

208 - 213

英文

Caching in Information-Centric Network (ICN) is critical to the performance of entire network. Many caching strategies have been proposed to optimize the overall cache hit ratio. These researches focus on placement of cached objects, i.e., choosing a router or routers to store copies. The replacement policy of an individual router, however, is less discussed. In this paper, we introduce a Centrality-Aware Hybrid Replacement (CAHR) scheme that separates ICN routers into LRU and LFU ones. Such manipulation not only improves average hit ratio of the network, it also makes the network more resilient to workloads of various patterns. Moreover, CAHR enables orchestration of multiple replacement policies in one network.