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The Cloudflare outage was a good thing

Cloudflare, the CDN provider, suffered a massive outage today. Some of the world's most popular apps and web services were left inaccessible for serveral hours whilst the Cloudflare team scrambled to fix a whole swathe of the internet.

And that might be a good thing.

The proximate cause of the outage was pretty mundane: a bad config file triggered a latent bug in one of Cloudflare's services. The file was too large (details still hazy) and this led to a cascading failure across Cloudflare operations. Probably there is some useful post-morteming about canary releases and staged rollouts.

Native Secure Enclave backed ssh keys on MacOS

It turns out that MacOS Tahoe can generate and use secure-enclave backed SSH keys! This replaces projects like https://github.com/maxgoedjen/secretive

There is a shared library /usr/lib/ssh-keychain.dylib that traditionally has been used to add smartcard support to ssh by implementing PKCS11Provider interface. However since recently it also implements SecurityKeyProivder which supports loading keys directly from the secure enclave! SecurityKeyProvider is what is normally used to talk to FIDO2 devices (e.g. libfido2 can be used to talk to your Yubikey). However you can now use it to talk to your Secure Enclave instead!

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

Pixel Perfect GIF to MP4 Conversion

problem

Sharing pixel art as animated gifs on social media sucks. Uploading animated gifs will typically get automatically converted to a video format with blurry results. We can manually do the conversion ourselves to get much nicer results.

solution

ffmpeg -i input.gif -movflags faststart -pix_fmt yuv420p -vf scale=1920:1080:flags=neighbor output.mp4

	- name: Overprovision like the pros'
	hosts: all
	tasks:
	- name: Install early OOM killer and zram
	ansible.builtin.apt:
	pkg:
	- earlyoom
	- zram-tools
	- name: Configure early OOM killer
	ansible.builtin.lineinfile:

	<div style="position:absolute;top:-999px;left:-999px">
	<svg
	id="effectSvg"
	width="200"
	height="200"
	viewBox="0 0 200 200"
	xmlns="http://www.w3.org/2000/svg">


	<filter id="displacementFilter4">

	#!/bin/bash

	# Function to display usage information
	usage() {
	echo "Usage: $0 /path/to/input.mp4 [ /path/to/output_directory ]"
	exit 1
	}

	# Check if at least one argument (input file) is provided
	if [ $# -lt 1 ]; then

	/*
	Made by Elly Loel - https://ellyloel.com/
	With inspiration from:
	- Josh W Comeau - https://courses.joshwcomeau.com/css-for-js/treasure-trove/010-global-styles/
	- Andy Bell - https://piccalil.li/blog/a-modern-css-reset/
	- Adam Argyle - https://unpkg.com/[email protected]/normalize.min.css / https://codepen.io/argyleink/pen/KKvRORE

	Notes:
	- `:where()` is used to lower specificity for easy overriding.
	*/

	<html>
	<head>
	<title>Stripe Gradient</title>
	</head>
	<body>
	<canvas id="gradient-canvas" data-js-darken-top data-transition-in>
	<!--
	Remove data-js-darken-top to keep the same brightness in the upper part of the canvas
	-->
	</canvas>

	/* Written in 2017 by Tommy Ettinger ([email protected])

	To the extent possible under law, the author has dedicated all copyright
	and related and neighboring rights to this software to the public domain
	worldwide. This software is distributed without any warranty.

	See <http://creativecommons.org/publicdomain/zero/1.0/>. */

	#include <stdint.h>