通过结构化点对点覆盖利用路由冗余

Ben Y. Zhao, Ling Huang, J. Stribling, A. Joseph, J. Kubiatowicz
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引用次数: 66

摘要

结构化点对点覆盖通过有效的故障检测和备份路径的预计算为弹性路由提供了自然的基础设施。这些覆盖层可以在几百毫秒内对故障做出反应,在备用路由之间快速切换。在本文中,我们提出了结构化覆盖的两种自适应机制,并举例说明了它们在Tapestry (Berkeley的一种故障弹性覆盖)上下文中的操作。我们还描述了一种透明的、独立于协议的流量重定向机制,该机制通过覆盖层对遗留应用程序流量进行隧道传输。我们对Tapestry原型的测量表明,它是一个高度响应的路由服务,能够有效地规避一系列故障,同时在维护带宽和额外的路由延迟方面产生合理的成本。
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Exploiting routing redundancy via structured peer-to-peer overlays
Structured peer-to-peer overlays provide a natural infrastructure for resilient routing via efficient fault detection and precomputation of backup paths. These overlays can respond to faults in a few hundred milliseconds by rapidly shifting between alternate routes. In this paper, we present two adaptive mechanisms for structured overlays and illustrate their operation in the context of Tapestry, a fault-resilient overlay from Berkeley. We also describe a transparent, protocol-independent traffic redirection mechanism that tunnels legacy application traffic through overlays. Our measurements of a Tapestry prototype show it to be a highly responsive routing service, effective at circumventing a range of failures while incurring reasonable cost in maintenance bandwidth and additional routing latency.
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