Abstract
The performance of Content Delivery Network (CDN) system is affected by the collaboration among CDN servers. This paper proposes a collaborative caching among CDN servers known as provider oriented hierarchical cooperative content outsourcing (POHC). In order to highlight the advantages of our proposed framework, OMNeT++ software is used for simulation in order to compare with the non-cooperative pull-based content outsourcing (Non-CPB). The result from simulation shows that our proposal is more efficient in term of packet loss and reliability versus the Non-CPB mode. After collecting relevant status of all CDN servers in online network, this paper uses DBSPT-Circular-PO algorithm to build POHC with root, which is the content provider.
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