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FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.


Effective Engineer - Notes

What's an Effective Engineer?

@vasanthk
vasanthk / System Design.md
Last active July 18, 2026 12:12
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?
@tsiege
tsiege / The Technical Interview Cheat Sheet.md
Last active July 16, 2026 19:50
This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






\

@plentz
plentz / nginx.conf
Last active July 12, 2026 15:05
Best nginx configuration for improved security(and performance)
# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048
@nikcub
nikcub / README.md
Created October 4, 2012 13:06
Facebook PHP Source Code from August 2007
@isaacs
isaacs / node-and-npm-in-30-seconds.sh
Last active June 7, 2026 10:38
Use one of these techniques to install node and npm without having to sudo. Discussed in more detail at http://joyeur.com/2010/12/10/installing-node-and-npm/ Note: npm >=0.3 is *safer* when using sudo.
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

Git Cheat Sheet

Commands

Getting Started

git init

or

@kyletaylored
kyletaylored / pantheon-sql-perf.php
Last active February 25, 2026 19:35
Fix SQL_CALC_FOUND_ROWS performance degradation on WordPress, fix database indexes and primary keys.
<?php
/**
* Plugin Name: WordPress SQL Performance
* Plugin URI: https://www.pantheon.io
* Description: Fix SQL_CALC_FOUND_ROWS performance degradation.
* Author: Kyle Taylor, Pantheon
* Version: 1.0
* License: GPL2
* Credit: https://wpartisan.me/tutorials/wordpress-database-queries-speed-sql_calc_found_rows
@avafloww
avafloww / PhpJava.java
Last active August 12, 2025 13:33
This snippet of code is syntactically valid in both PHP and Java, and produces the same output in both.
/*<?php
//*/public class PhpJava { public static void main(String[] args) { System.out.printf("/*%s",
//\u000A\u002F\u002A
class PhpJava {
static function main() {
echo(//\u000A\u002A\u002F
"Hello World!");
}}
//\u000A\u002F\u002A
PhpJava::main();
@jonathantneal
jonathantneal / README.md
Last active March 24, 2025 17:47
Local SSL websites on macOS Sierra

Local SSL websites on macOS Sierra

These instructions will guide you through the process of setting up local, trusted websites on your own computer.

These instructions are intended to be used on macOS Sierra, but they have been known to work in El Capitan, Yosemite, Mavericks, and Mountain Lion.

NOTE: You may substitute the edit command for nano, vim, or whatever the editor of your choice is. Personally, I forward the edit command to Sublime Text:

alias edit="/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl"