Uma avaliação do impacto de políticas de seleção de servidores cache na borda das redes móveis
Abstract
The objective of this paper is to show that cache server selection policies have a reduced impact on cache efficiency at the edge of mobile networks. To do this, simulations are performed by varying the server selection policies, the storage capacity, and the distribution of storage among cache servers. The efficiency metrics used are the average hit and the average delay for retrieving the content segments. The results show that the different server selection policies have less than 1% performance difference between each other for the average delay for obtaining the segments. On the other hand, storage capacity has a large impact on cache efficiency. A 7 times larger storage capacity can reduce the average delay by 36%. The results also show that concentrating the cache storage capacity on a single server instead of distributing it can reduce the maintenance cost by impacting the average delay by less than 3%.
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