Aysar aysark

"Scar Tissues Make Relationships Wear Out"

04/26/2103. From a lecture by Professor John Ousterhout at Stanford, class CS142.

This is my most touchy-feely thought for the weekend. Here’s the basic idea: It’s really hard to build relationships that last for a long time. If you haven’t discovered this, you will discover this sooner or later. And it's hard both for personal relationships and for business relationships. And to me, it's pretty amazing that two people can stay married for 25 years without killing each other.

[Laughter]

> But honestly, most professional relationships don't last anywhere near that long. The best bands always seem to break up after 2 or 3 years. And business partnerships fall apart, and there's all these problems in these relationships that just don't last. So, why is that? Well, in my view, it’s relationships don't fail because there some single catastrophic event to destroy them, although often there is a single catastrophic event around the the end of the relation

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

Does the design expect failures to happen regularly and handle them gracefully?
Have we kept things as simple as possible?

Description

The Jenkins Build Status History widget periodically fetches a snapshot of build status information for a specified list of jobs on a Jenkins CI server.

As time progresses, new build status samples are added to the right, while older samples are removed from the left. This view allows you to quickly see the health of your jobs as well as any time trends.

Calls are made to the Jenkins API to retrieve the name and color properties of listed jobs in a JSON form. The color of a given job represents its current build status (i.e. "blue" => successful build, "red" => failing build and so on).

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!

\

Server Status Squares

A Dashing widget that checks whether a server is responding to either an http or ping request using smaller squares to represent its status.

This is based off of the Server Status widget that willjohnson developed but modified to work across multiple squares rather than be one square with a list.

Description

The widget updates the appropriate squares color upon determining its status. Statuses are as follows:

	'use strict';

	var Hoek = require('hoek');
	var Util = require('util');
	var Log = require('./lib/logger');
	var Cache = require('./lib/cache');
	var Mailer = require('./lib/mailer');
	var Db = require('./lib/dbx');
	var Storage = require('./lib/storage');
	var Auth = require('./lib/auth');

	#!/bin/bash

	AWS_DEFAULT_REGION="ap-northeast-1"
	AWS_ACCESS_KEY_ID="YOUR ACCESS KEY HERE"
	AWS_SECRET_ACCESS_KEY="YOUR SECRET ACCESS KEY HERE"

	INSTANCE_ID_URL="http://169.254.169.254/latest/meta-data/instance-id"
	INSTANCE_ID=$(curl -s ${INSTANCE_ID_URL})

	SERVER_STATUS_URL="http://localhost/php-fpm-status"

	#
	# Installation script for scrapyd on Debian/Ubuntu
	# http://scrapyd.readthedocs.org/
	#
	# - Latest scrapyd from Scrapy package repository
	# - Password protection with http basic auth
	# - HTTPS with self-signed certificate
	# - Works on Amazon EC2
	#
	FQDN=scrapy.example.com

	/* *******************************************************************************************
	* THE UPDATED VERSION IS AVAILABLE AT
	* https://github.com/LeCoupa/awesome-cheatsheets
	* ******************************************************************************************* */


	// 0. Synopsis.
	// http://nodejs.org/api/synopsis.html

	@import url(http://fonts.googleapis.com/css?family=Roboto+Slab:700\|Exo+2:300,600);

	/* Eric Meyer's Reset CSS v2.0 - http://cssreset.com */
	html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{border:0;font-size:100%;font:inherit;vertical-align:baseline;margin:0;padding:0}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:none}table{border-collapse:collapse;border-spacing:0}

	/* Solarized Palette - http://ethanschoonover.com/solarized ---------
	lightgray : #819090;
	gray : #70