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You're talking like Node offers real concurrency. It doesn't.

There's nothing wrong with Node's concurrency. Our app, like most webapps, is I/O bound. Any individual instance should be able to handle thousands of concurrent requests as long as they are all blocked on I/O.

Being able to process more than one concurrent request (as Node can) is "real concurrency". Java-style native threading is a step above and beyond this, and unnecessary for most web applications.

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