Gabriel PREDA eRadical

Git Cheat Sheet

Commands

Getting Started

git init

or

System Design Cheatsheet

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

Basic Steps

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?

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

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

DevSecOps Maturity Model

DevSecOps has finally become popular within the wider IT industry in 2019. I started as a web developer in 2001, learned about testing automation, system deployment automation, and "infrastructure as code" in 2012, when DevOps was becoming a popular term. DevOps became common after the release of The Phoenix Project in Jan 2013. It has taken 7+ years for security to become integrated within the DevOps methodology. The following is a list of concepts I go through with project owners, project managers, operations, developers, and security teams, to help establish how mature their DevOps and security automation is, and to help them increase that maturity over time. This model is based on experience consulting with a variety of US Financial, Healthcare, and Department of Defense, organizations, and combines:

PCI DSS
NYDFS
[HITRUST CSF](https://hitrustalliance.net/product-tool/hitrus

	# Modify this file accordingly for your specific requirement.
	# http://www.thegeekstuff.com
	# 1. Delete all existing rules
	iptables -F

	# 2. Set default chain policies
	iptables -P INPUT DROP
	iptables -P FORWARD DROP
	iptables -P OUTPUT DROP

	# /etc/systemd/system/clustercheck.socket

	[Unit]
	Description=MySQL Clustercheck Socket

	[Socket]
	ListenStream=9200
	Accept=true

	[Install]

	---

	# List here all data controllers
	controllers:
	- name: Control Corporation
	address: 42 control road, 75000 Paris, France
	organisational_part: Control Part
	contact_person: Jean-Claude Control

	# That's all recipients for this data, wether internal database or an