chrismccord

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

chrismccord

# remove any bad refs
git remote prune origin

# pipe into bash and auto-delete any branches that have been merged into master!
git log master --pretty=format:'%d' | grep '^ (origin' | tr -d ' ()' | sed 's/origin\//git push origin :/'

chrismccord

var socket = new Phoenix.Socket(PewMiddle.config.socketPath);

PewMiddle.requestGame = function(username, callback) {
    socket.join(PewMiddle.config.channel, "lobby", {username: username}, function(channel) {
      var player = null;
        channel.on("player:created", function(message) {
          player = message;
        });
        channel.on("game:created", function(game) {
          callback(game.id, player);

chrismccord

#!/bin/bash

# This script can be used in "run & hope" mode or you can use it as a recipe to
# do things manually - you probably want the latter if you really care about
# the data in your databases.
# Happy hacking
# /Eoin/

# Tell bash to stop if something goes wrong
set -e

chrismccord

Using OTP's observer (appmon replacement) remotely

$ ssh remote-host "epmd -names"
epmd: up and running on port 4369 with data:
name some_node at port 58769

Note the running on port for epmd itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:

$ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host

chrismccord

Comparative Benchmark Numbers @ Rackspace

I've taken the benchmarks from Matthew Rothenberg's phoenix-showdown, updated Phoenix to 0.13.1 and ran the tests on the most powerful machines available at Rackspace.

Results

Framework	Throughput (req/s)	Latency (ms)	Consistency (σ ms)

chrismccord

// 1. Add Bootstrap as a dependency in package.json

{
  ...
  "dependencies": {
    ...
    "bootstrap": "~3.3.6"
  }
}

chrismccord

defmodule DrainStop do
  @moduledoc """
  DrainStop Attempts to gracefully shutdown an endpoint when a normal shutdown
  occurs. It first shuts down the acceptor, ensuring that no new requests can be
  made. It then waits for all pending requests to complete. If the timeout
  expires before this happens, it stops waiting, allowing the supervision tree
  to continue its shutdown order.

  DrainStop should be installed in your supervision tree *after* the
  EndPoint it is going to drain stop.

chrismccord

#!/bin/bash
# installing erlang on ubuntu's

VERSION="R15B01"

sudo apt-get install build-essential libncurses5-dev openssl libssl-dev

sudo mkdir -p /opt/erlang/
curl -O https://raw.github.com/spawngrid/kerl/master/kerl && chmod a+x kerl
sudo mv kerl /opt/erlang/

chrismccord

cat > Dockerfile <<'DOCKERFILE'
FROM yugabytedb/yugabyte:latest
ADD  start.sh .
RUN  chmod a+x start.sh
ENV RF=3
CMD ./start.sh
DOCKERFILE

cat > start.sh <<'START'