James Futhey kidGodzilla

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

Why I hate TypeScript

Warning: These views are highly oppinated and might have some slightly incorrect facts. My experience with typescript was about 2 weeks in Node and a week in angular2.

Not Standard

TypeScript is implementing their own take on JavaScript. Some of the things they are writing will likely never make it in an official ES* spec either.

Technologies that have competing spec / community driven development have a history of failing; take: Flash, SilverLight, CoffeeScript, the list goes on. If you have a large code base, picking TypeScript is something your going to be living with for a long time. I can take a bet in 3 years JavaScript will still be around without a doubt.

Its also worth noting that they have built some things like module system and as soon as the spec came out they ditched it and started using that. Have fun updating!

Setup fail2ban (v0.8.11) with ufw and nginx on Ubuntu 14.04

Install fail2ban & ufw

If you haven't already, install fail2ban and ufw:

sudo apt-get install fail2ban ufw

Now make a copy of the fail2ban configuration, and name it jail.local:

My notes for Dokku on Digital Ocean.

These may be a bit outdated: Since I originally wrote them, I've reinstalled on a newer Dokku and may not have updated every section below.

Commands

Install dokku-cli (gem install dokku-cli) for a more Heroku-like CLI experience (dokku config:set FOO=bar).

# List/run commands when not on Dokku server (assuming a "henroku" ~/.ssh/config alias)

ssh henroku dokku

IRC Reference

by xero updated 10.29.24

	# available limit
	user@ubuntu:~$ ulimit -n
	1024

	# To increase the available limit to say 65535
	user@ubuntu:~$ sudo vim /etc/sysctl.conf

	# add the following line to it
	fs.file-max = 65535

	// JavaScript error reporting functions, including automatic window.onerror
	// and unhandledrejection reporting.
	//
	// Based on:
	// https://kevinlocke.name/bits/2019/07/30/more-robust-javascript-error-reporting/
	//
	// API:
	// reportError(message, error):
	// Report an exception with optional message and exception value.
	// reportRejection(message, cause):

	// Creare's 'Implied Consent' EU Cookie Law Banner v:2.4
	// Conceived by Robert Kent, James Bavington & Tom Foyster

	var dropCookie = true; // false disables the Cookie, allowing you to style the banner
	var cookieDuration = 14; // Number of days before the cookie expires, and the banner reappears
	var cookieName = 'complianceCookie'; // Name of our cookie
	var cookieValue = 'on'; // Value of cookie

	function createDiv(){
	var bodytag = document.getElementsByTagName('body')[0];