bitcity

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
Scaling Twitter: Making Twitter 10000 Percent Faster

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

	#!/bin/bash
	#
	# DESCRIPTION:
	#
	# Set the bash prompt according to:
	# * the active virtualenv
	# * the branch/status of the current mercurial repository
	# * the return value of the previous command
	#
	# USAGE:

	#!/bin/bash
	#
	# DESCRIPTION:
	#
	# Set the bash prompt according to:
	# * the active virtualenv
	# * the branch/status of the current git repository
	# * the return value of the previous command
	# * the fact you just came from Windows and are used to having newlines in
	# your prompts.

	upstream myapp {
	server 127.0.0.1:8081;
	}

	limit_req_zone $binary_remote_addr zone=login:10m rate=1r/s;

	server {
	listen 443 ssl spdy;
	server_name _;

	ffmpeg -i <your movie file> -vf scale=1:1 <output folder>/%06d.png

	convert +append <output folder>/* out.png

	mogrify -scale x50\! out.png

	Credit : https://www.reddit.com/r/dataisbeautiful/comments/3rb8zi/the_average_color_of_every_frame_of_a_given_movie/cwmn4q2

	Lined Paper with CSS - Source : http://css3.wikidot.com/blog:lined-paper-with-css
	--------------------
	Repeating background gradient to give the effect of lines across the paper, and a pseudo element on the left to
	give the ruled margin.


	.paper {
	font: normal 12px/1.5 "Lucida Grande", arial, sans-serif;
	width: 300px;
	margin: 0 auto 10px;