ikennaokpala

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/

ikennaokpala

Vagrant error :NFS is reporting that your exports file is invalid

==> default: Exporting NFS shared folders...
NFS is reporting that your exports file is invalid. Vagrant does
this check before making any changes to the file. Please correct
the issues below and execute "vagrant reload":

exports:2: path contains non-directory or non-existent components: /Users/<username>/path/to/vagrant
exports:2: no usable directories in export entry
exports:2: using fallback (marked offline): /

ikennaokpala

sudo apt-get update -y && sudo apt-get install imagemagick -y && sudo apt-get install php5-imagick  -y && sudo add-apt-repository ppa:dhor/myway -y && sudo apt-get update -y && sudo apt-get install graphicsmagick -y && sudo apt-get install libgraphicsmagick1-dev -y && sudo pecl install gmagick-1.1.1RC1


sudo vim /etc/php5/fpm/php.ini

extension=/usr/lib/php5/20121212/gmagick.so
extension=/usr/lib/x86_64-linux-gnu/ImageMagick-6.7.7/modules-Q16/coders/magick.so
extension=/usr/lib/php5/20121212/imagick.so

/home/gfb/app/wp/wp-content/ewww

ikennaokpala

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

ikennaokpala

<?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/

ikennaokpala

sudo update_engine_client -update

ikennaokpala

#!/bin/bash
sudo mkdir -p /opt/bin
#sudo curl -L `sudo curl -s https://api.github.com/repos/docker/compose/releases/latest | jq -r '.assets[].browser_download_url | select(contains("Linux") and contains("x86_64"))'` > docker-compose
sudo curl -L https://github.com/docker/compose/releases/download/1.7.0-rc1/docker-compose-`uname -s`-`uname -m` > docker-compose
sudo chmod +x docker-compose
sudo mv docker-compose /opt/bin

ikennaokpala

- Login to robots backend
- Activate rescue mode and obtain the rescue password.
- Restart system to boot into rescue mode via Network/DHCP
- ssh x.x.x.x -l root
- Edit the following script to add your ssh key or list of ssh keys indented line by line starting with a dash

ikennaokpala

netstat -tn 2>/dev/null | grep :80 | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -nr | head

ikennaokpala

# 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"