Joenel de Asis joeneldeasis

This tutorial uses the "Sample hapi.js REST API" project.

Take a look at: https://github.com/agendor/sample-hapi-rest-api/

##Topics

Introduction
Installing Node.js
Installing MySQL
Setting-up the project

Uses capped collection, tailable cursors and streams.

What's here?

init.js recreates collection capped collection 'queue' on mongodb.
writer.js spams queue with new messages
worker.js processes all messages saved to queue,
onceWorker.js processes only unprocessed messages, so you can spawn several of them and each of your messages will be processed by only one worker.

Steps

Let's Encrypt on Ubuntu 14.04, nginx with webroot auth

This document details how I setup LE on my server. Firstly, install the client as described on http://letsencrypt.readthedocs.org/en/latest/using.html and make sure you can execute it. I put it in /root/letsencrypt.

As it is not possible to change the ports used for the standalone authenticator and I already have a nginx running on port 80/443, I opted to use the webroot method for each of my domains (note that LE does not issue wildcard certificates by design, so you probably want to get a cert for www.example.com and example.com).

Configuration

For this, I placed config files into etc/letsencrypt/configs, named after <domain>.conf. The files are simple:

Nginx Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400,000 to 500,000 requests per second (clustered), most what i saw is 50,000 to 80,000 (non-clustered) requests per second and 30% CPU load, course, this was 2xIntel Xeon with HT enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

First, you will need to install nginx, my way to install nginx is compiling it from source, but for now we will use apt-get

	## Install NGINX
	$ sudo yum install nginx -y

	## Install PHP and PHP-FPM
	$ sudo yum install php -y
	$ sudo yum install php-fpm -y

	## Configure NGINX (see below)
	$ sudo nano /etc/nginx/conf.d/default.conf

	var isoCountries = {
	'AF' : 'Afghanistan',
	'AX' : 'Aland Islands',
	'AL' : 'Albania',
	'DZ' : 'Algeria',
	'AS' : 'American Samoa',
	'AD' : 'Andorra',
	'AO' : 'Angola',
	'AI' : 'Anguilla',
	'AQ' : 'Antarctica',

	// from http://scratch99.com/web-development/javascript/convert-bytes-to-mb-kb/
	function bytesToSize(bytes) {
	var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
	if (bytes == 0) return 'n/a';
	var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
	if (i == 0) return bytes + ' ' + sizes[i];
	return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + sizes[i];
	};

	var express = require('express'),
	passport = require('passport'),
	LocalStrategy = require('passport-local').Strategy,
	connect = require('connect'),
	http = require('http'),
	path = require('path'),
	util = require('util'),
	fs = require('fs'),
	redis = require('redis'),
	cookie = require('cookie'),

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048