高浩亮 haolian9

I have not implemented any below solutions. But I think the first reference is good

References:

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?

Understanding the Memory Layout of Linux Executables

Required tools for playing around with memory:

hexdump
objdump
readelf
xxd
gcore

I recently happened upon a very interesting implementation of popen() (different API, same idea) called popen-noshell using clone(2), and so I opened an issue requesting use of vfork(2) or posix_spawn() for portability. It turns out that on Linux there's an important advantage to using clone(2). I think I should capture the things I wrote there in a better place. A gist, a blog, whatever.

This is not a paper. I assume reader familiarity with fork() in particular and Unix in general, though, of course, I link to relevant wiki pages, so if the unfamiliar reader is willing to go down the rabbit hole, they should be able to come ou

collapsible markdown?

CLICK ME

yes, even hidden code blocks!

print("hello world!")

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.17.1 darwin/amd64.

GOOS Values

GOOS	Out of the Box
`aix`	✅
`android`	✅

Restrict the amount of CPU and memory resources that Chrome can consume.

Tested on Ubuntu 16.04/Linux Mint 18.

Install cgroups:

sudo apt install cgroup-bin

	#!/bin/bash

	web_service='nginx'
	config_file="/usr/local/etc/le-renew-webroot.ini"

	le_path='/opt/letsencrypt'
	exp_limit=30;

	if [ ! -f $config_file ]; then
	echo "[ERROR] config file does not exist: $config_file"

	## Pre-requisite: You have to know your last commit message from your deleted branch.
	git reflog
	# Search for message in the list
	# a901eda HEAD@{18}: commit: <last commit message>

	# Now you have two options, either checkout revision or HEAD
	git checkout a901eda
	# Or
	git checkout HEAD@{18}

	package main

	import (
	"fmt"
	)

	func partition(a []int, lo, hi int) int {
	// Select the highest index or right most element in the array
	// as the pivot.
	p := a[hi]