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What is your folder-structure preference for a large-scale Node.js project?

This is the reference point. All the other options are based off this.

|-- app
|   |-- controllers
|   |   |-- admin

Last updated: 2021-02-21, tested with socket.io v3.1.1

This is the simplest implementation you will find for a client/server WebSockets architecture using socket.io.

To see a full explanation, read my answer on SO here: https://stackoverflow.com/a/24232050/778272.

If you're looking for examples using frameworks, check these links:

	// Easy Frontend
	// Học FE đơn giản, dễ hiểu và đặc biệt phải vui ❤️
	// JS NÂNG CAO - Xử lý expired token trong Javascript như thế nào?


	// ❓ Chuyện gì xảy ra nếu giữa chừng token bị expired?
	// Ví dụ: 3 api requests đồng thời với nhau

	// TRƯỜNG HỢP 1: Token chưa expired, vẫn còn tốt chán 🤣
	// --request 1-->

	import NodeCache from 'node-cache';

	class Cache {

	constructor(ttlSeconds) {
	this.cache = new NodeCache({ stdTTL: ttlSeconds, checkperiod: ttlSeconds * 0.2, useClones: false });
	}

	get(key, storeFunction) {
	const value = this.cache.get(key);

	//var salt = CryptoJS.lib.WordArray.random(256/32);
	//var iv = CryptoJS.lib.WordArray.random(256/32);
	//console.log('salt '+ salt );
	//console.log('iv '+ iv );

	var salt = CryptoJS.enc.Hex.parse("28698aadc97f3ad8");
	var iv = CryptoJS.enc.Hex.parse("73ac39603da6e205");
	console.log('salt '+ salt );
	console.log('iv '+ iv );
	var key128Bits = CryptoJS.PBKDF2("Secret Passphrase", salt, { keySize: 256/32 });

	import EXIF from 'exif-js';

	const hasBlobConstructor = typeof (Blob) !== 'undefined' && (function checkBlobConstructor() {
	try {
	return Boolean(new Blob());
	} catch (error) {
	return false;
	}
	}());

	// Feeds model after cache

	import DB from '../db';
	import CacheService from '../cache.service';

	const ttl = 60 * 60 * 1; // cache for 1 Hour
	const cache = new CacheService(ttl); // Create a new cache service instance

	const FeedModel = {