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null

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# config/locales/en.yml

en:
  exception:
    show:
      not_found:
        title: "Not Found"
        description: "The page you were looking for does not exists."
      internal_server_error:
        title: "Internal Server Error"

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#!/usr/bin/env ruby

require 'securerandom'

# Example
#   class User
#     include GenerateTokenFor[:confirmation_token]
#   end
#
#   @user = User.new

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module Utils
  module S3
    # Example
    #   Utils::S3::Bucket.all_objects_in('images')
    module Bucket
      class << self
        def all_objects_in(bucket_name)
          all_objects_from_marker(bucket_name, nil)
        end

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class PagesController < ApplicationController
  def async
    EM.defer do
      env['async.callback'].call [200, {}, ['Hello from callback.']]
    end
    throw :async
  end
end

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/.bundle
/db/*.sqlite3
/doc
/log
/public/assets
/tmp
/vendor/assets/components

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-- MySQL port of "Sharding & IDs at Instagram"
-- http://instagram-engineering.tumblr.com/post/10853187575/sharding-ids-at-instagram

CREATE TABLE account_id_seq (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
  stub CHAR(1) NOT NULL,
  UNIQUE KEY stub (stub)
);

INSERT INTO account_id_seq (stub) VALUES ('a');

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/docs
/target
/lib
/classes
/checkouts
pom.xml
*.jar
*.class
.lein-deps-sum
.lein-failures

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EduBaseCloudまとめ

自動ssh

60秒毎にpingする。更にsshしてたら/tmpにファイルを作る。

# ~/.ssh/config
ServerAliveInterval 60
ControlMaster auto

ControlPath /tmp/%r@%h:%p

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class CreateBookmarks < ActiveRecord::Migration
  def up
    execute <<-SQL
CREATE SEQUENCE bookmarks_id_seq;

CREATE FUNCTION next_bookmark_id(OUT result bigint) AS $$
DECLARE
  epoch bigint := 1420070400000;
  seq_id bigint;
  now bigint;