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by thalesmello 3523 days ago
I particularly don't find the problem it solves appealing. The power of Node comes specifically from its everything async programming model, Javascript is just a detail.

So what's the point in taking away the good part, and keep the cumbersome one? If you just want to program a Synchronous server in the JVM,just stick to Java.
3 comments
_pmf_ 3522 days ago
> If you just want to program a Synchronous server in the JVM,just stick to Java.

And if you want to program an asynchronous server on the JVM in Java, all of the major and minor servers also support an asynchronous model (you merely lose the ability to program against the Servlet API, which pre-3 was bound to threads).

There's no reason at all to bring JS in for asynchronous behavior.

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sourcesmith 3522 days ago
There is also Vert.x which runs on the JVM but is event driven and asynchronous (as well as providing a reactive API) and supports JavaScript (http://vertx.io/docs/vertx-core/js/) as one of its languages.
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cel1ne 3522 days ago
I hope you don't mean the JVM by "the cumbersome part". It think is unparalleled in performance, garbage-collection, general dev-ops and monitoring capabilities.

You can run many different languages on it, all nicely contained within the virtual machine.

As far as I know Twitter replaced their Ruby/Rails with Code on top of the JVM for these reasons.

Also I don't think it's good to religiously stick to async/"just one thread" and sync/"one thread for everything". The most performant answer depends on the real world scenario and almost always lies somewhere in between.

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boggydepot 3522 days ago
I think he meant the js not java. Question about node js, So async model is the good part, js is the bad part, why use js then?
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my123 3522 days ago
The JVM is nowhere near as flexible as the CLR.
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cel1ne 3522 days ago
The JVM probably lags behind in some aspects. But it's ecosystem is way larger and not biased towards Windows.
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peterashford 3520 days ago
In what way?
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my123 3520 days ago
The CLR can be used to run C++ code compiled with the C++/CLI (/clr:pure) setting of MSVC. Java apps can even run on the CLR because of IKVM (https://www.nuget.org/packages/IKVM).

Good luck at using pointers in Java.

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amelius 3522 days ago
> The power of Node comes specifically from its everything async programming model, Javascript is just a detail.

I don't agree. The power of Node comes from being able to run the same code on the browser and the server (without transpiling performance penalties).

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