johnhamelink

My Elixir Deployment Wishlist

Foreward

Based on my recent experience of deployment, I've become rather frustrated with the deployment tooling in Elixir. This document is the result of me thinking to myself, "I wish we had x...". This document isn't meant to dishearten anyone who has built tooling for elixir - thank you so much for what you've done. This is meant more as what I personally see as something that would help a lot of Erlang/Elixir newbies like myself to be able to get deploying quickly and efficiently.

1. Release files should be templates

It should be possible to add in custom configuration to the bootstrap scripts. This would allow plugins to be able to add extra steps to the startup / shutdown / upgrade procedure. One way to implement this would be to make all scripts which handle bootstrapping or controlling the machine [.eex][1] templates. This would allow other parts of the release system to inject new functionality where needed.

theoretick

Notes on deploying Elixir, Erlang, and OTP apps with exrm and conform

---

• how exrm generates a release (with conform)
• why conform?
• how conform uses *.conf and schema
• exrm's mix release cycle (build on relx -> erlang release mgmt)
• Terminology

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

vdel26

#!/bin/sh
#
# chkconfig: 2345 55 25
# Description: Nginx init.d script, put in /etc/init.d, chmod +x /etc/init.d/nginx
#              For Debian, run: update-rc.d -f nginx defaults
#              For CentOS, run: chkconfig --add nginx
#
### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $all

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

gvaughn

Case 1: Missing Colon

.yml looks like:

  purchases_edit
    cannot_edit: "Purchase cannot be edited after submission"

We can test in irb: