David Gil dgilperez

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 (it's not shared).

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/docs/http/ngx_ht

Brew upgrade...

Run the usual brew update, and brew upgrade to get the latest 9.4 version of PostgreSQL.

After upgrading PG from 9.3 to 9.4 with brew, the server will not start as is. If you value your database contents, and configuration, pg_upgrade is here to migrate those.

Do not delete the old binaries at once: do not run brew cleanup, because you need 9.3 binaries to migrate.

	namespace :spec do
	# largely lifted from http://www.pervasivecode.com/blog/2007/06/28/hacking-rakestats-to-get-gross-loc/
	task :stats_setup do
	require 'code_statistics'

	class CodeStatistics
	alias calculate_statistics_orig calculate_statistics
	def calculate_statistics
	@pairs.inject({}) do \|stats, pair\|
	if 3 == pair.size

	/**
	*
	* Here's a thing that will look through all the text nodes of a document, and
	* upon encountering an emoji codepoint, will replace it with an image.
	* For now, those images are pulled from GitHub, which isn't very nice, so I
	* need to find a more suitable host.
	*
	* Much of this code was gleaned from staring at the minified GitHub JS.
	*
	* Copyright (c) 2013 Mark Wunsch. Licensed under the MIT License.

	<% flash.each do \|type, message\| %>
	<div class="alert <%= bootstrap_class_for(type) %> fade in">
	<button class="close" data-dismiss="alert">×</button>
	<%= message %>
	</div>
	<% end %>

	# Rails datetime_select and similar use multiparameter attributes which are
	# these dawful things from the bowels of activerecord and actionpack. This
	# module extends virtus models to coerce multiparameter attributes back together
	# before assigning attributes.
	#
	# Here's the implementation for ActiveRecord:
	#
	# https://github.com/rails/rails/blob/11fd052aa815ae0255ea5b2463e88138fb3fec61/activerecord/lib/active_record/attribute_assignment.rb#L113-L218
	#
	# and DataMapper:

	check process redis-server
	with pidfile "/var/run/redis.pid"
	start program = "/etc/init.d/redis-server start"
	stop program = "/etc/init.d/redis-server stop"
	if 2 restarts within 3 cycles then timeout
	if totalmem > 100 Mb then alert
	if children > 255 for 5 cycles then stop
	if cpu usage > 95% for 3 cycles then restart
	if failed host 127.0.0.1 port 6379 then restart
	if 5 restarts within 5 cycles then timeout

	gem 'rails', '4.2.1' # prob works on others, too, but this is the one I figured it out on
	require "rails"
	require 'active_record'
	require 'action_controller/railtie'
	require 'action_view/railtie'

	# ===== Configuration =====
	Rails.logger = ActiveRecord::Base.logger = Logger.new $stdout
	ActiveSupport::LogSubscriber.colorize_logging = false

	class AppDelegate
	def application(application, didFinishLaunchingWithOptions:launchOptions)
	alert = UIAlertView.new
	alert.message = t('start')
	alert.show
	true
	end

	def t(key)
	NSBundle.mainBundle.localizedStringForKey(key, value:nil, table:nil)

	class MyCustomCell < UITableViewCell

	# This method is used by ProMotion to instantiate cells.
	def initWithStyle(style_name, reuseIdentifier: reuseIdentifier)
	super
	stylish
	self
	end

	# A delegate method when the user clicks the Row(it's blue by default)

David Gil dgilperez

Nginx FastCGI response buffer sizes

Brew upgrade...

Migration