jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

tkarpinski

require 'octokit'
require 'csv'
require 'date'
# Github credentials to access your private project
USERNAME="USER_NAME"
PASSWORD="SEKRIT"

# Project you want to export issues from
USER="REPO_OWNER"
PROJECT="REPO_NAME"

wycats

~/Code/ember.js ‹ruby-1.9.3›  ‹master*› $ bundle && echo "fuck you giles"
Using rake (0.9.2.2) 
Using confparser (0.0.2.1) 
Using multi_json (1.0.4) 
Using execjs (1.2.13) 
Using libxml-ruby (2.2.2) 
Using faster_xml_simple (0.5.0) 
Using httpclient (2.2.4) 
Using json (1.6.5) 
Using nokogiri (1.5.0) 

bmarini

# https://www.varnish-cache.org/docs/2.1/tutorial/vcl.html
# https://www.varnish-cache.org/trac/wiki/VCLExamples

# Summary
# 1. Varnish will poll the backend at /health_check to make sure it is
#    healthy. If the backend goes down, varnish will server stale content
#    from the cache for up to 1 hour.
# 2. Varnish will pass X-Forwarded-For headers through to the backend
# 3. Varnish will remove cookies from urls that match static content file
#    extensions (jpg, gif, ...)

reu

set :rails_env,      "production"
set :passenger_port, 9292
set :passenger_cmd,  "#{bundle_cmd} exec passenger"

namespace :deploy do
  task :start, :roles => :app, :except => { :no_release => true } do
    run "cd #{current_path} && #{passenger_cmd} start -e #{rails_env} -p #{passenger_port} -d"
  end

  task :stop, :roles => :app, :except => { :no_release => true } do

iHiD

# A simple function to return a signed, expiring url for Amazon Cloudfront. 
# As it's relatively difficult to figure out exactly what is required, I've posted my working code here.

# This will require openssl, digest/sha1, base64 and maybe other libraries. 
# In my rails app, all of these are already loaded so I'm not sure of the exact dependencies.

module CloudFront
  def get_signed_expiring_url(path, expires_in, private_key_filename, key_pair_id)

    # AWS works on UTC, so make sure you are not using local time