Anton Nazarenko antnzr

System Design Cheatsheet

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

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?

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

Last major update: 25.08.2020

	#!/bin/bash

	if ! [ -x "$(command -v docker-compose)" ]; then
	echo 'Error: docker-compose is not installed.' >&2
	exit 1
	fi

	domains=(xxx.ru)
	rsa_key_size=4096
	nginx_container=nginx_xxx

	:set number relativenumber
	:set nu rnu
	:set autoindent " Indent a new line the same amount as the line just typed
	:set tabstop=2 " Number of columns occupied by a tab
	:set shiftwidth=2 " Width for autoindents
	:set softtabstop=2 " See multiple spaces as tabstops so <BS> does the right thing
	:set mouse=v " Enable mouse click
	:set cc=100 " Set an 80 column border for good coding style
	:set cursorline " highlight current cursorline
	:set ttyfast " Speed up scrolling in Vim

	# replicaSet
	mkdir -p rs1 rs2 rs3
	# or in windows /c/rs1 or /data/db/rs1
	mongod --replSet myReplSet --logpath "rs1.log" --dbpath rs1 --port 27018 &
	mongod --replSet myReplSet --logpath "rs2.log" --dbpath rs2 --port 27019 &
	mongod --replSet myReplSet --logpath "rs3.log" --dbpath rs3 --port 27020 &

	# then connect to
	mongo --port 27018

	# a list of the VMs
	VBoxManage list vms

	# to run the "Ubuntu Server" VM
	VBoxManage startvm "Ubuntu Server" --type headless

	# to pause that VM
	VBoxManage controlvm "Ubuntu Server" pause --type headless

	# to restart that paused VM

	open `cmd` as an admin
	cd/
	netsh
	wlan show profile
	# with your current SSID -> Beeline777
	wlan show profile Beeline777 key=clear