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Nginx FastCGI response buffer sizes

By default when Nginx starts receiving a response from a FastCGI backend (such as PHP-FPM) it will buffer the response in memory before delivering it to the client. Any response larger than the set buffer size is saved to a temporary file on disk. This process is also explained at the Nginx ngx_http_fastcgi_module page document page.

Since disk is slow and memory is fast the aim is to get as many FastCGI responses passing through memory only. On the flip side we don't want to set an excessively large buffer as they are created and sized on a per request basis (i.e. it's not shared memory).

The related Nginx options are:

fastcgi_buffering appeared in Nginx 1.5.6 (1.6.0 stable) and can be used to turn buffering completely on/off. It's on by default.
[fastcgi_buffer_size](http://nginx.org/en/

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

CoreOS can seem daunting at first. This tutorial is built to encourage you in your journey and to demonstrate the power of this minimalistic operating system.

	<?php

	/*
	Author: Jim Westergren & Jeedo Aquino
	File: index-with-redis.php
	Updated: 2012-10-25

	This is a redis caching system for wordpress.
	see more here: www.jimwestergren.com/wordpress-with-redis-as-a-frontend-cache/

	# vim: ft=fish

	function __fish_init_boot2docker_env
	for dockerVar in (boot2docker shellinit 2>/dev/null \| sed -e 's/export/set -xU/' -e 's/=/ /');
	eval $dockerVar
	end
	end
	function boot2docker
	command boot2docker $argv
	if test "$argv[1]" = "up"

	# /etc/nginx/cloudflare.conf

	# If using Cloudflare, uncomment the following to get proper originating IPs
	#set_real_ip_from 204.93.240.0/24;
	#set_real_ip_from 204.93.177.0/24;
	#set_real_ip_from 199.27.128.0/21;
	#set_real_ip_from 173.245.48.0/20;
	#set_real_ip_from 103.22.200.0/22;
	#set_real_ip_from 141.101.64.0/18;
	#real_ip_header CF-Connecting-IP;

	[mysqld]

	### mysql general option
	bind-address = 0.0.0.0
	user = mysql
	pid-file = /var/run/mysqld/mysqld.pid
	socket = /var/run/mysqld/mysqld.sock
	port = 3306
	basedir = /usr
	datadir = /var/lib/mysql

	# MySQL. Versions 4.1 and 5.0 are recommended.
	#
	# Install the MySQL driver:
	# gem install mysql2
	#
	# And be sure to use new-style password hashing:
	# http://dev.mysql.com/doc/refman/5.0/en/old-client.html
	development:
	adapter: mysql2
	encoding: utf8

Ikenna N. Okpala ikennaokpala

Nginx FastCGI response buffer sizes

Backend Architectures

Twitter

Exercise 1: Boot up a 3 machine coreos cluster

1a: Install prerequisite software

1b: Clone the coreos-vagrant repo

byte-size tuts

golang tutorials

	<?php
	// rewrite /wp-content/themes/theme-name/css/ to /css/
	// rewrite /wp-content/themes/theme-name/js/ to /js/
	// rewrite /wp-content/themes/theme-name/img/ to /img/
	// rewrite /wp-content/plugins/ to /plugins/

	function roots_flush_rewrites() {
	global $wp_rewrite;
	$wp_rewrite->flush_rules();
	}