A content-delivering service within a large-scaled company in Taiwan has been proposed to use 40 servers to meet user requirements on the previous study. The managers of the case company want to use resources as few as possible. From previous study [19--21], we suggest them using 19 servers to deliver large files. However, because we need not only servers but also links to deliver content from the source to all destinations, we cannot discuss servers merely. Therefore, we must discuss about the reliability and cost of links that in previous study it discussed few about this matter. Since the important packets must be delivered on time, and the regular packets are flexible. Therefore, we need a proper design to make the important packets deliver to the destinations without mistake. The regular packets also need to be delivered to destinations, but they can resent to destinations until the urgent files are delivered completely. Therefore, the reliability design of links must consider following utilization: the system is used to deliver every kind of data securely, but the important packets must be delivered without delay. Therefore, this work models the reliability and cost of links to find the proper resource allocation that can help manager delivering urgent files and regular files.
Proc. of the Fourth International Conference on Queueing Theory and Network Applications