论文标题

命名用于内容交付网络工作流的数据网络

Named Data Networking for Content Delivery Network Workflows

论文作者

Thelagathoti, Rama Krishna, Mastorakis, Spyridon, Shah, Anant, Bedi, Harkeerat, Shannigrahi, Susmit

论文摘要

在这项工作中,我们研究了在内容交付网络(CDN)工作流程的背景下,调查了命名数据网络(NDN)的架构属性和功能,例如内容缓存和智能数据包转发。更具体地说,我们评估了NDN的POP(存在点)的属性,以便弹出并流行到设备连接。我们使用Apache流量服务器(ATS)平台来创建HTTP,类似CDN的缓存层次结构,以便将NDN与基于HTTP的内容交付进行比较。总体而言,我们的工作表明,NDN固有的属性可以使内容提供商和用户都受益。我们的实验结果表明,由于成熟的软件堆栈,HTTP在稳定条件下更快。但是,由于网络中的数据包级缓存以及从上游的近距离和快速重新递减,NDN在数据包丢失存在下的性能更好,即使损失率低至0.1%,也可以从上游近上引起的快速重新反复重新反复。我们进一步表明,NDN中首先字节(TTFB)的时间始终低于HTTP(在NDN中〜50ms中的〜100ms)(在NDN中〜50ms),这是CDN的重要要求,除了支持网络中发生故障时与另一个上游的透明失败。此外,我们研究了实现不可知论(实施选择可以是软件定义的网络,以信息为中心的网络或其他内容)网络属性,可以使CDN工作流有益。

In this work we investigate Named Data Networking's (NDN's) architectural properties and features, such as content caching and intelligent packet forwarding, in the context of a Content Delivery Network (CDN) workflows. More specifically, we evaluate NDN's properties for PoP (Point of Presence) to PoP and PoP to device connectivity. We use the Apache Traffic Server (ATS) platform to create an HTTP, CDN-like caching hierarchy in order to compare NDN with HTTP-based content delivery. Overall, our work demonstrates that properties inherent to NDN can benefit content providers and users alike. Our experimental results demonstrate that HTTP is faster under stable conditions due to a mature software stack. However, NDN performs better in the presence of packet loss, even for a loss rate as low as 0.1%, due to packet-level caching in the network and fast retransmissions from close upstreams and fast retransmissions from close upstreams. We further show that the Time To First Byte (TTFB) in NDN is consistently lower than HTTP (~100ms in HTTP vs ~50ms in NDN), a vital requirement for CDNs, in addition to supporting transparent failover to another upstream when a failure occurs in the network. Moreover, we examine implementation agnostic (implementation choices can be Software Defined Networking, Information Centric Networking, or something else) network properties that can benefit CDN workflows.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源