CDN边缘节点部署位置下沉的研究

CDN的出现，把流量推到网络的边缘，缓解主干网络的拥堵。当前CDN运营商的主要部署节点是在IDC机房，在通信运营商看来，IDC到最终用户还隔着CMNET，核心网与传送网。随着手机、平板等无线设备的普及，给核心网带宽压力越来越大。将CDN边缘节点下层到核心网中，对缓解核心网的网络压力，降低网络时延有着巨大的作用。本文对CDN边缘节点下沉的可行型及方案进行了分析，并特别针对当前研究比较少的CDN边缘计算节点进行了分析，由于缓存系统与CDN已渐成融合的趋势，本文将缓存系统的节点视为CDN边缘节点。

Research on the location of the CDN edge node deployment

CDN leads the flow of traffic onto the edge of the backbone network to ease congestion. Current major carriers deploy CDN node in IDC room, but in the telecommunications carrier opinion, IDC to the end user but also across CMNET, the core network and transmission network. With the popularity of mobile phones, tablet and other wireless devices to the core network bandwidth is increasing pressure. The CDN lower edge node to the core network, the core network to alleviate the pressure on the network, reducing network latency has a huge role. In this paper, CDN edge node type and feasible solutions were analyzed sinking, and especially for the current study less CDN edge computing nodes were analyzed, because the cache system and CDN integration has become the trend, this article will node cache system regarded as the CDN edge node.