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Asked: 2026-05-24T15:53:28+00:00

still trying to understnad node.js… If I apply the asp.net async pattern for every

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still trying to understnad node.js…

  1. If I apply the asp.net async pattern for every i/o operation, and configure maxWorkerThreads=1, is it (conceptually) similar to node.js?

  2. Does an i/o operation (in either framework) takes place in its own thread or is there some OS functionality to get notifications / light thread?

  3. this SO thread says that node.js still uses threads internally so it is not such a big difference from asp.net. Some answers say that yes, but it is a better programming model etc. Which threads does the question refers to, lightweight i/o like the ones I asked on in #2?

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1 Answer

  1. Editorial Team

    1. See this similar question

    2. As for the i/o operations that’s implementation specific. the linux backend uses libev and the windows backend uses IOCP. See this video on async i/o details for windows/linux

    3. node.js only uses threads internally because linux doesn’t have an async IO system (like windows does with IOCP). So to make async IO possible you need an internal thread pool. See the video.

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