Ryan Richards rrichards

A Capistrano Rails Guide

by Jonathan Rochkind, http://bibwild.wordpress.com

why cap?

Capistrano automates pushing out a new version of your application to a deployment location.

I've been writing and deploying Rails apps for a while, but I avoided using Capistrano until recently. I've got a pretty simple one-host deployment, and even though everyone said Capistrano was great, every time I tried to get started I just got snowed under not being able to figure out exactly what I wanted to do, and figured I wasn't having that much trouble doing it "manually".

This is a little trick I use to spin up the packages instalation on Debian/Ubuntu boxes in Vagrant.

I add a simple function that checks if a directory named something similar to ~/.vagrant.d/cache/apt/opscode-ubuntu-12.04/partial (it may have another path in Windows or MacOS) and create the directory if it doesn't already exist.

def local_cache(basebox_name)
  cache_dir = Vagrant::Environment.new.home_path.join('cache', 'apt', basebox_name)
  partial_dir = cache_dir.join('partial')
  partial_dir.mkdir unless partial_dir.exist?
 cache_dir

Moved to git repository: https://github.com/denji/nginx-tuning

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 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading 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.

Leanstack.io list of cloud services

Analytics

	source 'https://rubygems.org'

	gem 'rails', '3.2.1'

	# Bundle edge Rails instead:
	# gem 'rails', :git => 'git://github.com/rails/rails.git'

	gem 'sqlite3'

	#!/bin/bash

	# node.js using PPA (for statsd)
	sudo apt-get install python-software-properties
	sudo apt-add-repository ppa:chris-lea/node.js
	sudo apt-get update
	sudo apt-get install nodejs npm

	# Install git to get statsd
	sudo apt-get install git

	#!/bin/sh
	#
	# Runs during git flow release start
	#
	# Positional arguments:
	# $1 Version
	#
	# Return VERSION - When VERSION is returned empty gitflow
	# will stop as the version is necessary
	#

	[merge]
	tool = intellij
	# tool = Kaleidoscope
	[diff]
	tool = intellij
	# tool = Kaleidoscope

	# intellij mergetool config
	[mergetool "intellij"]
	cmd = /Applications/IntelliJ\\ IDEA\ 13\\ CE.app/Contents/MacOS/idea merge $(cd $(dirname "$LOCAL") && pwd)/$(basename "$LOCAL") $(cd $(dirname "$REMOTE") && pwd)/$(basename "$REMOTE") $(cd $(dirname "$BASE") && pwd)/$(basename "$BASE") $(cd $(dirname "$MERGED") && pwd)/$(basename "$MERGED")

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