Structuring connections between content delivery servers groups

摘要

Content Delivery Servers can be grouped into logical networks according to several criteria: similar characteristics; functionalities; type of data delivered or proximity. Sometimes, it could be useful to find a way to join these autonomous logical networks. Research in this area focuses in centralized solutions, e.g. using a single point for data delivery between these groups. This paper proposes a novel architecture to interconnect content delivery servers from different groups and explains how they establish logical connections. The topology of logical connections, between servers clustered in different groups, changes depending on their capacity or because of server failures. The proposal is based on a hierarchical structure, in which the role of the server in the architecture is given by several parameters, being also scalable and fault-tolerant. We present the analytical model for this interconnection architecture and results obtained for some defined parameters. Finally, developed an application which used the protocol described in this paper and we deployed the proposed architecture in a real environment to obtain accurate measurements.