Research on 2 queues LRU cache in satellite network
Zhao Yang, Hai Fang · 2022
Combined with the next-generation Internet system ICN (information centric networking), data caching in satellite broadband internet services can improve the efficiency of content distribution. Aiming at the problem of wasting storage due to cache homogeneity in LRU (Least Recently Used) which is the most widely used cache scheme, the LRU hit ratio of single node and the cache degradation problem in multi node network are evaluated. Then 2qLRU-Cache is proposed, which can enhance the cache hit ratio by filtering the data hierarchically with popularity and moving hot content close to end users. The simulation results with theoretical distribution and real world trace show that compared with LCE (Leave Copy Everywhere) + LRU and LCD (Leave Copy Down) + LRU, 2qLRU-Cache improves the network cache hit ratio and reduces the transmission cost.