Miko Gao gaowhen

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "[email protected]"

Clustering: The basics

The trick? pass the file descriptor from a parent process and have the server.listen reuse that descriptor. So multiprocess in their own memory space (but with ENV shared usually)

It does not balance, it leaves it to the kernel.

In the last nodejs > 0.8 there is a cluster module (functional although marked experimental)

http://nodejs.org/api/cluster.html
Simple cluster example:

Default

Powerlevel10k

mathclub是最近做的一个个人项目，帮助考SAT的同学通过在线做题、回顾、问答提高成绩。用户功能有：计次/计时做题、成绩单、错题分布、错题回顾、提问、汇总以及注册登录。管理后台主要是题库管理、学员管理、成绩单管理、问题回复。怎么看都像学校里的课设，的确项目本身并不出奇，开发上选用的一些方案或许更有意思。

整个项目一个人从产品需求、原型设计、前后端开发到部署历时2周左右。可以从截图上感受一下：

技术选型上服务端是Node.js，应用框架选了老牌的Express（4.x变化挺大不少中间件都废了），数据服务用的是MongoLab（MongoDB的云服务平台），图片上传用的是又拍云，程序部署在Nodejitsu上。模板引擎没选主流的Jade或ejs，而是用Express React Views它实现了在服务端渲染React组件。前端框架是用React，这次有意想追求前后端全部组件化的组织。之前是用Webpack实现CommonJS模块打包，这次用Browserify配置更简单，它有丰富的transform很赞，其中的reactify转换React的JSX很完美。CSS用Sass＋autoprefixer让人省心。将这一切串起来的自动构建工具是Gulp。我其实崇尚用最精简的工具组合开发，上述组合在我看来比较精简了。（帖纸留念）

![image](http://satexam.b0.upaiyu

	<!doctype html>
	<html lang="en">
	<head>
	<title>My Web Page</title>
	<meta charset="utf-8">
	<link href="/stylesheets/main.css" rel="stylesheet">
	</head>
	<body>
	</body>
	</html>

	var parser = document.createElement('a');
	parser.href = "http://example.com:3000/pathname/?search=test#hash";

	parser.protocol; // => "http:"
	parser.hostname; // => "example.com"
	parser.port; // => "3000"
	parser.pathname; // => "/pathname/"
	parser.search; // => "?search=test"
	parser.hash; // => "#hash"
	parser.host; // => "example.com:3000"

	#!/usr/bin/env python
	'''
	analyse the user's chrome behavior.
	'''
	import sqlite3
	import urlparse
	class AnalyseChrome:
	'''
	the user's chrome history log is writed by sqllite. and saved default in ~/.config/google-chrome/Default/History at ubuntu.
	'''

	#!/usr/bin/env python

	__copyright__ = 'Yuanxuan Wang <zellux at gmail dot com>'

	from calibre.web.feeds.news import BasicNewsRecipe
	from calibre.ebooks.BeautifulSoup import Tag, NavigableString
	from collections import OrderedDict
	from contextlib import nested, closing

	import json

	# -- coding: utf8 --

	# 下载速度很慢，
	import urllib2, urllib
	import sys
	import os
	import socket
	import re

	import socks

	#!/usr/bin/env bash

	set -e

	STAGING_LOCATION="$(brew cask doctor \
	\| grep -A1 '==> Homebrew-cask Staging Location:' \| tail -n1 \
	\| awk '{print $1}')"

	echo "==> Upgrading casks"
	for cask in $(ls ${STAGING_LOCATION})