How can I use shared memory in nodejs program?

Question

I have some C++ services running on server and a node server program listening to a specific port. Can I use shared memory between C++ services and nodejs program? I want users to send data through nodejs server and those C++ services access them. Is it possible?

Here: https://stackoverflow.com/q/10965201/632951 – Pacerier Jul 21 '17 at 14:54 — Pacerier, Jul 21 '17 at 14:54

score 5 · Answer 1 · answered Mar 18 '13 at 14:34

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I tried write a C/C++ binding of shared memory access from nodejs. https://github.com/supipd/node-shm

Still work in progress (but working for me), maybe usefull, if bug or suggestion, inform me.

answered Mar 18 '13 at 14:34

supipd

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score 3 · Answer 2 · answered Feb 07 '13 at 01:58

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You can write a binding to C/C++. Start from http://howtonode.org/how-to-module (Writing a Binding section).

Within the binding code, you can use shared memory to your C++ service, although it may make more sense to link directly to the service if it makes sense.

answered Feb 07 '13 at 01:58

Pascal Belloncle

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Thank you, I must read it and then think about my problem again. – JalalJaberi Feb 07 '13 at 02:10
I wouldn't recommend using shared memory from Node.js. Can't you have your node.js talk to your service over TCP or anything message-based ? – Floby Feb 07 '13 at 10:26
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@Floby: When nodejs application and c++ service are in same os is it a good idea? (using TCP) – JalalJaberi Feb 25 '13 at 21:24
Yes it is. TCP is portable to any platform. If you design your application this way you do not have to worry about compatibility issues. – Floby Feb 26 '13 at 08:54
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@Floby, TCP is slow. That's the reason for shared memory. – Pacerier Feb 28 '17 at 17:17
@Pacerier No, not really. – Floby Mar 02 '17 at 13:10
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@Floby, compared to shared memory, yeah, really. – Maarten Jul 16 '18 at 19:02
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Shared memory needs to be used with extreme care. But for a large data set it is millions of times faster than TCP. – Artelius Nov 23 '19 at 02:06

How can I use shared memory in nodejs program?

2 Answers2