Discover gists

Notes on Martin Kleppmann's excellent Designing Data-Intensive Applications.

Chapter 1: Reliable, Scalable, and Maintainable Applications

Data Systems
- Dimensions to consider when thinking about data systems: access patterns, performance characteristics, implementations.
- Modern data systems often blur the lines between databases, caches, streams, etc.
Reliability
- Systems should perform the expected function at a given level of performance, and be tolerant to faults and user mistakes
Fault: One component of a system deviating from its spec. Prefer tolerating faults over preventing them (except for things like security issues). Faults stem from hardware failures, software failures, and human error (in a study, config errors caused most outages).

claw machine

I'm terrible at controlling actual claw machines, so I coded my own. You can move the claw by holding down the button, and stop by releasing. The main challenge was to chain the animation required to move the claw and the arm. To simulate gravity, the toy tilts based on which part of the toy the claw grabs. The facial expression on the toys and the claw is also animated for fun.

A Pen by Masahito Leo Takeuchi on CodePen.

License.

Chat GPT "DAN" (and other "Jailbreaks")

Note: This is all almost full YouTube ID informations. Original owner goes to AgentOak, modified version by Martin Eesmaa.

See the credits and also special thanks in below.

Last updated: 13 December 2025

Also known as itag or format codes and way back they could be specified with the fmt parameter (e.g. &fmt=22). Depending on the age and/or popularity of the video, not all formats will be available.

	#!/usr/bin/env bash
	# castanet.sh: Script to connect a chromecast to a WiFi network.
	#
	# Allows you to put your Chromecast on WiFi and do Chromecast initial setup
	# without using the Google Home app at all, just using a normal Linux computer.
	#
	# You do need your Chromecast to be on Ethernet, or (untested) to join its setup WiFi
	# network with your PC, and you also need to find out its IP yourself with e.g.
	# Wireshark.

	# Script was tested with SNH-P6410BN - other similar cameras may be compatible as well
	# Execute below line in PowerShell with admin privileges before launching the script
	# Set-ExecutionPolicy -Scope Process -ExecutionPolicy RemoteSigned -Force

	#For PowerShell versions lower than 7.0 comment -AllowUnencryptedAuthentication in Invoke-RestMethod

	Function CameraConfig {
	param(
	[string]$DefaultIP = "192.168.0.0",
	[string]$IP = $null,

	KFZUS-F3JGV-T95Y7-BXGAS-5NHHP
	T3ZWQ-P2738-3FJWS-YE7HT-6NA3K
	KFZUS-F3JGV-T95Y7-BXGAS-5NHHP
	65Z2L-P36BY-YWJYC-TMJZL-YDZ2S
	SFZHH-2Y246-Z483L-EU92B-LNYUA
	GSZVS-5W4WA-T9F2E-L3XUX-68473
	FTZ8A-R3CP8-AVHYW-KKRMQ-SYDLS
	Q3ZWN-QWLZG-32G22-SCJXZ-9B5S4
	DAZPH-G39D3-R4QY7-9PVAY-VQ6BU
	KLZ5G-X37YY-65ZYN-EUSV7-WPPBS

	Tiny_RayTracing.ps by Takashi Hayakawa ([email protected])
	is a ray tracing program in only 762 bytes (plus header)!

	BEST OBFUSCATED ARTWORK -- 1st prize
	-- The 2nd most coveted prize. These combine obfuscation with great artwork.

	Don't send this one to a printer. It will take too long. Display it
	on the screen and be ready to wait a while. The picture is well worth it.
	If you want to print the picture much faster, use Tiny_RayTracing_Fast.ps instead.

	#!/bin/bash

	memo=".f4a.mem"
	result=""
	if [[ $1 == "" ]]; then
	result="$(basename $PWD).txt"
	find ./ -type f ! -path "/.git/" > $memo
	else
	result="$(basename $1).txt"
	find $1 -type f ! -path "/.git/" > $memo

Discover gists

Chapter 1: Reliable, Scalable, and Maintainable Applications

claw machine

Chat GPT "DAN" (and other "Jailbreaks")

DASH video