ragingwind

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

vlucas

'use strict';

const crypto = require('crypto');

const ENCRYPTION_KEY = process.env.ENCRYPTION_KEY; // Must be 256 bits (32 characters)
const IV_LENGTH = 16; // For AES, this is always 16

function encrypt(text) {
 let iv = crypto.randomBytes(IV_LENGTH);
 let cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(ENCRYPTION_KEY), iv);

uhlenbrock

load 'deploy/assets'

namespace :deploy do
  namespace :assets do
    desc 'Run the precompile task locally and rsync with shared'
    task :precompile, :roles => :web, :except => { :no_release => true } do
      %x{bundle exec rake assets:precompile}
      %x{rsync --recursive --times --rsh=ssh --compress --human-readable --progress public/assets #{user}@#{host}:#{shared_path}}
      %x{bundle exec rake assets:clean}
    end

scy

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

• From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
• That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

necolas

/**
 * OnLayout is built upon: View (and ResizeObserver), StyleSheet
 */
 
const elementBreakpoints = {
  small: { minWidth: 200 },
  medium: { minWidth: 300 }
  large: { minWidth: 500 }
};
 

ngryman

#!upstart

description "your fancy description that no one will see ;)"
author "Your Name <youremail@fqdn>"

# start on every run level, 2 is the one on Ubuntu
start on runlevel [2345]

# stop on halt, maintenance or reboot
stop on runlevel [016]

weppos

# 
# = Capistrano database.yml task
#
# Provides a couple of tasks for creating the database.yml 
# configuration file dynamically when deploy:setup is run.
#
# Category::    Capistrano
# Package::     Database
# Author::      Simone Carletti <weppos@weppos.net>
# Copyright::   2007-2010 The Authors

mikeal

JSON._dateReviver = function (k,v) {
  if (v.length !== 24 || typeof v !== 'string') return v
  try {return new Date(v)} 
  catch(e) {return v}
}

JSON.parseWithDates = function (obj) {
  return JSON.parse(obj, JSON._dateReviver);
}

roberttod

// Reading tab

var lastCookie;
setInterval(function (){
  if (lastCookie !== document.cookie) console.log("interval change");
  lastCookie = document.cookie;
  for (var i = 0; i < 10000; i++) {
    if (lastCookie !== document.cookie) console.log("change");
    lastCookie = document.cookie;
  }

ryanflorence

A better package.json

Right now everybody seems to be creating their own .json.

Here are the reasons I think it happens:

1. node dependencies may be different than browser dependencies
2. node main.js may be different than browser main.js
3. {project} {something} may be different than {project2} {something2}