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分布式计算的谬论(译)

2014年09月05日 ⁄ 综合 ⁄ 共 1229字 ⁄ 字号 评论关闭

The fallacies are summarized as follows:[1] 谬论总结如下

  1. The network is reliable.网络是可靠的
  2. Latency is zero.延迟为0
  3. Bandwidth is infinite.带宽是无限的
  4. The network is secure.网络是安全的
  5. Topology doesn't change.拓扑结构不会改变
  6. There is one administrator.至少有一个管理员
  7. Transport cost is zero.传输无需任何代价
  8. The network is homogeneous.所有的网络都是同质的

Effects of the fallacies(谬论导致的后果)

  1. Ignorance of network latency, and of the packet loss it can cause, induces application- and transport-layer
    developers to allow unbounded traffic, greatly increasing dropped packets and wasting bandwidth.
      无视网络延迟以及由延迟引起的报文丢失,会导致应用及传输层开发人员允许不受控的传输,从而极大增加丢失的报文数目和带宽浪费.
   2. Complacency regarding network security results in being blindsided by malicious users and programs that continually adapt to         security measures.[2]
      过度相信网络的安全性会导致无法觉察到恶意用户的入侵,从而无法及时采取安全措施
   3. Multiple administrators, as with subnets for
rival companies, may institute conflicting policies of which senders of network traffic must be aware in order to complete their desired paths.
      (这句该如何翻译是好呢,求指教)
   4. The "hidden" costs of building and maintaining a network or subnet are non-negligible and must consequently be noted in budgets to avoid vast shortfalls.
       建设和维护一个网络的潜在成本是不容小觑的,而且还必须划出一笔预算来预防大范围网络失效
   5.Ignorance of bandwidth limits on the part of traffic senders can result in bottlenecks over frequency-multiplexed media.

        发送端忽视带宽限制会导致频率复用介质的传输瓶颈

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