Suresh Kumar toddlers

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
Scaling Twitter: Making Twitter 10000 Percent Faster

Trying Vagrant / LXC / Docker

LXC

Here are some LXC links:

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

OpenVPN on Ubuntu 12.10 at DigitalOcean

Install OpenVPN

sudo apt-get install openvpn

Generate Server Certificates

sudo cp -r /usr/share/doc/openvpn/examples/easy-rsa/2.0 /etc/openvpn/easy-rsa2

cd /etc/openvpn/easy-rsa2

This is what they use.

http://graphite.wikidot.com/screen-shots | Screen Shots - Graphite
https://github.com/etsy/statsd/blob/master/docs/graphite.md | statsd/docs/graphite.md at master · etsy/statsd · GitHub
http://ericfarkas.com/posts/statsd-graphite-ubuntu/ | Setting up statsd + graphite on Ubuntu 12.04 LTS
https://github.com/janoside/ubuntu-statsd-graphite-setup | janoside/ubuntu-statsd-graphite-setup · GitHub
http://drupalcode.org/project/statsd.git/tree/refs/heads/7.x-1.x | drupalcode.org Git - project/statsd.git/tree
http://collectd.org/ | Start page – collectd – The system statistics collection daemon
http://hackerific.net/2012/02/27/monitoring-things-with-collectd/ | Monitoring Things with collectd
https://github.com/sensu/sensu-community-plugins | sensu/sensu-community-plugins · GitHub

Requirements

RVM (or rbenv, but this will use RVM)
You're using RVM or rbenv to manage your rubies, right? If not, you should be.
Virtualbox
some cookbooks you wrote and want to test

Set it up

We don't want to mess up our carefully crafted Chef 10.x environment, right? We'll use rvm gemsets to make a disposable set of gems. If something goes wrong, just close the terminal you're in, or run rvm gemset use default. You'll drop back to the default gemset.

Since this is on Hacker News and reddit...

No, I don't distribute my résumé like this. A friend of mine made a joke about me being the kind of person who would do this, so I did (the link on that page was added later). My actual résumé is a good bit crazier.
I apologize for the use of _t in my types. I spend a lot of time at a level where I can do that; "reserved for system libraries? I am the system libraries".
Since people kept complaining, I've fixed the assignments of string literals to non-const char *s.
My use of type * name, however, is entirely intentional.
If you're using an older compiler, you might have trouble with the anonymous unions and the designated initializers - I think gcc 4.4 requires some extra braces to get them working together. Anything reasonably recent should work fine. Clang and gcc (newer than 4.4, at le

Vagrant Setup

This tutorial guides you through creating your first Vagrant project.

We start with a generic Ubuntu VM, and use the Chef provisioning tool to:

install packages for vim, git
create user accounts, as specified in included JSON config files
install specified user dotfiles (.bashrc, .vimrc, etc) from a git repository

Afterwards, we'll see how easy it is to package our newly provisioned VM

	#!/usr/bin/env python
	"""
	A nagios plugin for ensuring that load balancers have at least a certain
	number of healthy nodes.

	Usage:

	Nagios Command:
	define command {
	command_name check_elb_healthy_hosts

	# With Vagrantfile's chef.json:

	chef.json = {
	"postgresql" => {
	"version" => "9.2"
	}
	}

	# Calling a premade databag item, from a recipe
	# ! This probably will require modifications