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@mikhailov
mikhailov / script.sh
Created Oct 13, 2012
Fight with TCP Slow Start
View script.sh
#!/bin/sh
ip route |grep default # default via 10.235.9.1 dev eth0
ip route change default via `ip route| awk '/^def/{print $3}'` dev eth0 initcwnd 16
ip route |grep default # default via 10.235.9.1 dev eth0 initcwnd 16
sysctl -w net.ipv4.tcp_slow_start_after_idle=0
sysctl -a |grep net.ipv4.tcp_slow_start_after_idle
@mikhailov
mikhailov / deploy.rb
Created Jul 26, 2012
capistrano prettify
View deploy.rb
# standard capistrano config goes here....
# Put the maintenance screen if DB migrations take in place only
before "deploy", "deploy:delayed_job:stop"
before "deploy:migrations", "deploy:delayed_job:stop"
after "deploy:update_code", "deploy:symlink_shared", "deploy:assets_compress"
before "deploy:migrate", "deploy:web:disable", "deploy:db:backup"
after "deploy", "newrelic:notice_deployment", "deploy:cleanup", "deploy:delayed_job:restart"
@mikhailov
mikhailov / 0. nginx_setup.sh
Last active Sep 14, 2021
Nginx + secure pseudo-streaming
View 0. nginx_setup.sh
# Nginx can serve FLV/MP4 files by pseudo-streaming way without any specific media-server software.
# To do the custom build we use 2 modules: --with-http_secure_link_module --with-http_flv_module
# This module "secure-link" helps you to protect links from stealing away.
#
# NOTE: see more details at coderwall: http://coderwall.com/p/3hksyg
cd /usr/src
wget http://nginx.org/download/nginx-1.5.13.tar.gz
tar xzvf ./nginx-1.5.13.tar.gz && rm -f ./nginx-1.5.13.tar.gz
@mikhailov
mikhailov / 0. nginx_setup.sh
Last active Jan 14, 2021
NGINX+SPDY with Unicorn. True Zero-Downtime unless migrations. Best practices.
View 0. nginx_setup.sh
# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
# /etc/init.d/nginx (1. nginx)
# /home/app/public_html/app_production/current (Capistrano directory)
#
@mikhailov
mikhailov / mysql_strict.rb
Created Jul 2, 2012
Rails 3.2 monkey-patch to enable Mysql strict mode by default
View mysql_strict.rb
class ActiveRecord::ConnectionAdapters::Mysql2Adapter
private
alias_method :configure_connection_without_strict_mode, :configure_connection
def configure_connection
configure_connection_without_strict_mode
strict_mode = "SQL_MODE='STRICT_ALL_TABLES'"
execute("SET #{strict_mode}", :skip_logging)
end
View capistrano_log_recipes.rb
namespace :log do
desc "A pinch of tail"
task :tailf, :roles => :app do
run "tail -n 10000 -f #{shared_path}/log/#{rails_env}.log" do |channel, stream, data|
puts "#{data}"
break if stream == :err
end
end
@mikhailov
mikhailov / ruby_gc.sh
Created Mar 11, 2011
Ruby’s GC Configuration
View ruby_gc.sh
- http://www.coffeepowered.net/2009/06/13/fine-tuning-your-garbage-collector/
- http://snaprails.tumblr.com/post/241746095/rubys-gc-configuration
article’s settings: ("spec spec" took 17-23!sec)
export RUBY_HEAP_MIN_SLOTS=1250000
export RUBY_HEAP_SLOTS_INCREMENT=100000
export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
export RUBY_GC_MALLOC_LIMIT=30000000
export RUBY_HEAP_FREE_MIN=12500
@mikhailov
mikhailov / installation.sh
Created Nov 23, 2010
nginx+passenger (real production config)
View installation.sh
# NOTICE: to get Nginx+Unicorn best-practices configuration see the gist https://gist.github.com/3052776
$ cd /usr/src
$ wget http://nginx.org/download/nginx-1.2.1.tar.gz
$ tar xzvf ./nginx-1.2.1.tar.gz && rm -f ./nginx-1.2.1.tar.gz
$ wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.30.tar.gz
$ tar xzvf pcre-8.30.tar.gz && rm -f ./pcre-8.30.tar.gz
$ wget http://www.openssl.org/source/openssl-1.0.1c.tar.gz
@mikhailov
mikhailov / gist:706275
Created Nov 19, 2010
nginx native ssl redirection without ssl_requirement
View gist:706275
server {
listen 80;
server_name *.domain.com;
rewrite ^(.*) https://$host$1 permanent;
}
@mikhailov
mikhailov / ajax_defaults.js
Created Aug 25, 2010
automatically show/hide ajax-spinner + disable/enable submit buttons
View ajax_defaults.js
var spinner = $('#ajax-spinner');
$(document).ajaxSend(function() {
$('input[type=submit]').attr('disabled', 'disabled');
$('#warningBox').hide();
spinner.show()
}).ajaxStop(function() {
$('input[type=submit]').removeAttr('disabled');
spinner.hide()
});