Node js rest api one or many?

Question

Nginx

I have a server for Rest Api ( https://vk.com/api4e1)
Api manages data in mongodb. Messages, Users, authorization and other modules, each is written in a separate js file and is standalone.
Question: is it better for everyone to be launched by a separate process and listen to their own port? Or is it better to make one process that will simply manage all the data?
PS nginx is responsible for redirection
Option 1:
A separate process for messages.js that listens on port #1000
A separate process for users.js that listens on port #1001
, etc.
nginx already redirects the request to different ports depending on the url
Option 2:
The only process for server.js that is listening on port #1000
nginx sends all api requests to this port

Answer 1

According to the process for the js file, this is something like microservices. If they are so self-contained that they can be cut into processes without any extra effort, I would do so.
The advantage is that in the future they can be taken apart by different machines. M - Scaling.

Answer 2

VK did just that.