什么是低延迟数据访问? [英] What is low latency access of data?

问题描述

低延迟访问数据是什么意思?

What do you mean by low latency access of data?

我实际上对术语" LATENCY " 的定义感到困惑.

I am actually confused about the definition of the term "LATENCY".

任何人都可以详细说明延迟"一词.

Can anyone please elaborate the term "Latency".

推荐答案

• 延迟-访问数据所需的时间.
• 带宽-您可以获得多少数据.

经典示例:

充满备份磁带的旅行车是高延迟，高带宽.这些备份磁带中包含很多信息，但是货车要花很长时间才能到达任何地方.

A wagon full of backup tapes is high latency, high bandwidth. There's a lot of information in those backup tapes, but it takes a long time for a wagon to get anywhere.

低延迟网络对于流媒体服务很重要.语音流需要非常低的带宽(对于AFAIR，电话质量为4 kbps)，但需要数据包快速到达.即使带宽足够，在高延迟网络上的语音呼叫也会导致扬声器之间的时间滞后.

Low latency networks are important for streaming services. Voice streaming needs very low bandwidth (4 kbps for telephone quality AFAIR) but needs the packets to arrive fast. A voice call on a high latency network results in time lag between the speakers, even if there is enough bandwidth.

其他重要的延迟应用程序:

Other applications where latency is important:

• 某些类型的在线游戏(FPS，RTS等)
• 算法交易

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