mjurincic

/*jslint node: true */
"use strict";

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

var app = express();

mjurincic

'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);

mjurincic

Top-level await is a footgun 👣🔫

Follow-ups:

• Why imperative imports are slower than declarative imports
• Dynamic module loading done right
• Non-deterministic module ordering is an even bigger footgun

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.

mjurincic

Git Flow (with rebasing)

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

Features

mjurincic

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');

mjurincic

# 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.

mjurincic

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

mjurincic

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}`);
});

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

mjurincic

var path = require('path');
var fs = require('fs');
var AWS = require('aws-sdk');

var polly = new AWS.Polly();

var lexRuntime = new AWS.LexRuntime();

async function run() {
    var audioStream = polly.synthesizeSpeech({