在节点进程中共享变量的最佳方式

Question

Suppose I have 2 two processes like these:

file1.js

let variable1 = "variable1"

file2.js

let variable2 = "variable2"

that have both been spawned using

node file1.js
node file2.js

Is there a way to let them communicate? For example can I get variable1 's value from file2.js ?

Answer 1

If you create a master node js and fork 2 child node js process than you can communicate data between parent and child .

Basic example:

const fork = require('child_process').fork;

const program = path.resolve('child.js');
const parameters = [];
const options = {
  stdio: [ 'pipe', 'pipe', 'pipe', 'ipc' ]
};

const child = fork(program, parameters, options);
child.on('message', message => {
  console.log('message from child:', message);
  child.send('Hi');
});

More: https://nodejs.org/api/child_process.html#child_process_child_process_fork_modulepath_args_options