Mauro mjurincic

AWS ELB with Node.js and WebSockets

This assumes that:

You are using Nginx.
You want to accept incoming connections on port 80.
Your Node.js app is listening on port 3000.
You want to be able to connect to your Node.js instance directly as well as via the load balancer.

####1. Create load balancer

Configure Nginx as a web server and reverse proxy for Nodejs application on AWS Ubuntu 16.04 server Introduction Nginx was created in response to C10k challenge for handling at least 10,000 simultaneous client connections on a single server. Nginx uses asynchronous, event-driven architecture to handle these massive amount of connections. This architecture makes handling high and fluctuating loads much more predictable in terms of RAM usage, CPU usage, and latency. Nginx can be used as web server, reverse proxy, load balancer and HTTP cache.

Image Credits Installing Nginx on AWS ec2 instance with Ubuntu 16.04 $ sudo apt-get update && sudo apt-get upgrade -y $ sudo apt-get install nginx -y Setup Nginx

Git Flow (with rebasing)

See http://nvie.com/posts/a-successful-git-branching-model/

Features

Top-level `await` is a footgun 👣🔫

Follow-ups:

As the creator of Rollup I often get cc'd on discussions about JavaScript modules and their semantics. Recently I've found myself in various conversations about top-level await.

	const Koa = require('koa');
	const app = new Koa();

	app.use(ctx => {
	ctx.body = 'Hello World';
	});

	var listener = app.listen(process.env.PORT \|\| 3000, () => {
	console.log(`Listening on port ${listener.address().port}`);
	});

	# install the plugins and build the static site
	gitbook install && gitbook build

	# checkout to the gh-pages branch
	git checkout gh-pages

	# pull the latest updates
	git pull origin gh-pages --rebase

	# copy the static site files into the current directory.

	const http = require('http');
	const memwatch = require('memwatch-next');
	const heapdump = require('heapdump');

	var server = http.createServer((req, res) => {
	for (var i=0; i<1000; i++) {
	server.on('request', function leakyfunc() {});
	}

	res.end('Hello World\n');

	'use strict';

	var util = require('util'),
	winston = require('winston'),
	logger = new winston.Logger(),
	production = (process.env.NODE_ENV \|\| '').toLowerCase() === 'production';

	module.exports = {
	middleware: function(req, res, next){
	console.info(req.method, req.url, res.statusCode);

	/jslint node: true /
	"use strict";

	var express = require("express"),
	consolidate = require("consolidate"),
	Handlebars = require("handlebars"),
	fs = require("fs");

	var app = express();

	<!DOCTYPE html>
	<html>
	<head>
	<title>Duplicate a select list using jQuery</title>

	<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
	<script src="selectScript.js"></script>
	</head>
	<body>
	<div id="d1">

Mauro mjurincic

AWS ELB with Node.js and WebSockets

Git Flow (with rebasing)

Features

Top-level await is a footgun 👣🔫

Top-level `await` is a footgun 👣🔫