NodeJs Node.js by default is using a single core of a processor for code execution. Therefore, NodeJs Node.js introduced a cluster module to spawn processes. “Cluster” was introduced to scale an application execution on multiple processor cores by creating worker processes. Worker processes share a single port, therefore, requests are routed through a shared port.
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#!/usr/bin/env node
var cluster = require("cluster");
if (cluster.isMaster) {
var conf = require("./cluster.json");
// Figure out number of workers.
var numWorkers = conf.workers;
if (numWorkers == 0) {
var numCPUs = require("os").cpus().length;
if (numCPUs < conf.min_workers) {
numWorkers = conf.min_workers;
} else {
numWorkers = numCPUs;
}
}
// Fork workers.
//console.log("Starting " + numWorkers + " workers.");
for (var i = 0; i < numWorkers; i++) {
cluster.fork();
}
cluster.on('exit', (worker, code, signal) => { });
} else {
// Load Profound.js
var profoundjs = require("profoundjs");
// Apply configuration
var config = require("./config.js");
profoundjs.applyConfig(config);
// Start Profound.js server
var isWorker = profoundjs.server.listen();
if (isWorker) {
// This is the top-level Express Application.
// Custom Express coding can be added here.
var express = profoundjs.server.express;
var app = profoundjs.server.app;
app.use(express.json()); // default to use JSON-encoded post data
}
}
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#!/usr/bin/env node
var cluster = require("cluster");
if (cluster.isMaster) {
var conf = require("./cluster.json");
// Figure out number of workers.
var numWorkers = conf.workers;
if (numWorkers == 0) {
var numCPUs = require("os").cpus().length;
if (numCPUs < conf.min_workers) {
numWorkers = conf.min_workers;
} else {
numWorkers = numCPUs;
}
}
// Fork workers.
//console.log("Starting " + numWorkers + " workers.");
for (var i = 0; i < numWorkers; i++) {
cluster.fork();
}
cluster.on('exit', (worker, code, signal) => { });
} else {
// Load Profound.js
var profoundjs = require("profoundjs");
// Apply configuration
var config = require("./config.js");
profoundjs.applyConfig(config);
// Start Profound.js server
var isWorker = profoundjs.server.listen();
if (isWorker) {
// This is the top-level Express Application.
// Custom Express coding can be added here.
var express = profoundjs.server.express;
var app = profoundjs.server.app;
app.use(express.json()); // default to use JSON-encoded post data
}
}
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