padde

require 'active_support/duration'

offset = 0

puts "attempt 0 immediately"

0.upto(24) do |count|
  # https://github.com/mperham/sidekiq/blob/v6.1.2/lib/sidekiq/job_retry.rb#L225
  average_jitter = (15 * (count + 1))
  delay = count**4 + 15 + average_jitter

padde

Keybase proof

I hereby claim:

• I am padde on github.
• I am padde (https://keybase.io/padde) on keybase.
• I have a public key ASAEolg38G1AcHEJA02qn5GcHNIM5025SKK7qMthoGn4RAo

To claim this, I am signing this object:

padde

#!/usr/bin/env bash

############### USAGE ###############
# 
# 1. Create a new workspace on Cloud9 using the "Blank" template
#
# 2. Run this command in the console:
#    bash <(curl -fsSL https://gist.githubusercontent.com/padde/3c6301f15cbd5025e131740dae33aa95/raw/c9-elixir.sh)
#
# 3. There is no step 3!

padde

defmodule Codepoints do
  defstruct str: ""

  def new(str) when is_list(str) do
    new(to_string(str))
  end

  def new(str) when is_binary(str) do
    %__MODULE__{str: str}
  end

padde

defmodule Parallel do
  def run(funs, max) do
    tasks = for fun <- funs, do: {make_ref, fun}
    results = do_run(tasks, max, 0, %{})
    for {ref, _} <- tasks, do: results[ref]
  end

  defp do_run([], _max, 0, results) do
    results
  end

padde

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

padde

#!/usr/bin/env sh

# Automatically renew all installed letsencrypt certificates on this server

service nginx stop
/root/letsencrypt/letsencrypt-auto renew -nvv --standalone > /var/log/letsencrypt/renew.log 2>&1
RESULT=$?
service nginx start

# optional: notify yourself of succeeded/failed renewals

padde

lines = `tput lines`.to_i
cols = `tput cols`.to_i

# hide cursor
print "\e[?25l"

# clear screen
print "\e[2J"

at_exit do

padde

Let's Encrypt with Nginx

Here's how I set up a tiny Nginx/Rails server that uses HTTPS via a Let's Encrypt issued certificate.

https://letsencrypt.paddd.de/

Server

I use the smallest DigitalOcean droplet (512 MB) here, which is built from the "Ubuntu Ruby on Rails on 14.04" image provided by them.

padde

module RakeOptionParser
  def self.parse(args)
    args.extras.each_with_object({}) do |arg, result|
      key, value = arg.split(/:\s*/, 2)
      result[key.to_sym] = value
    end
  end
end

namespace :foo do