ryansmith3136

package main

import (
	"database/sql"
	"fmt"
	_ "github.com/bmizerany/pq"
	"strconv"
	"strings"
)

ryansmith3136

package main

import (
  "encoding/json"
	"fmt"
	"net/http"
	"strconv"
	"sync"
	"time"
	"io/ioutil"

ryansmith3136

CREATE AGGREGATE array_accum (anyarray)
(
    sfunc = array_cat,
    stype = anyarray,
    initcond = '{}'
);  

ryansmith3136

Komrade

Komrade is a message queue for your workers. Komrade will help you manage background jobs for web applications.

HTTP based queueing service.

• PUT Job
• POST Job's Heartbeat
• PUT Job Failure
• GET Jobs

ryansmith3136

Tales From a Heroku User

Here are some things I have learned along the way.

Last Updated: 2013-02-08

Original Audience: Hack Reactor

About

ryansmith3136

Predictable Failure

Building systems that fail in predictable ways promote safety and sanity.

Original Audience: Heroku Waza 2013

About

• @ryandotsmith
• Engineer at Heroku for almost 3 years.

ryansmith3136

class RackTimer
  def initialize(app)
    @app = app
  end

  def call(env)
    start_request = Time.now
    status, headers, body = @app.call(env)
    elapsed = (Time.now - start_request) * 1000
    $stdout.puts("request-id=#{env['HTTP_HEROKU_REQUEST_ID']} measure.rack-request=#{elapsed.round}ms")

ryansmith3136

def log(data)
  result = nil
  if data.key?(:measure)
    name = data.delete(:measure).insert(0, ENV["APP_NAME"] + ".")
  end
  if block_given?
    start = Time.now
    result = yield
    elapsed = (Time.now.to_f - start.to_f) * 1000
    data.merge!("measure.#{name}" => elapsed.round)

ryansmith3136

#encoding UTF-8
require 'openssl'
require 'base64'

module FernetLite
  MAX_CLOCK_SKEW = 60
  VERSION = 0x80
  
  def self.split_key(k)
    dec = Base64.urlsafe_decode64(k)

ryansmith3136

def render_html
  dir = Rails.root.join("app", "views", "users")
  view = ActionView::Base.new(dir, :user => @user)
  view.extend(ApplicationHelper)
  view.render(file: 'show', layout: '../layouts/application.html.erb')
end