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Versions: 5
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Contents
Rainbows! do
name = '<%= @name %>'
case ENV['RACK_ENV'].to_sym
when :development
worker_processes 1
worker_connections 32
listen 8080
stderr_path "log/development.log"
stdout_path "log/development.log"
when :production
worker_processes 2
worker_connections 32
timeout 30
listen 8080
pid "log/#{name}.pid"
stderr_path "log/production.log"
stdout_path "log/production.log"
###
# Hardcore performance tweaks, described here: https://github.com/blog/517-unicorn
###
# This loads the app in master, and then forks workers. Kill with USR2 and it will do a graceful restart using the block proceeding.
preload_app true
before_fork do |server, worker|
##
# When sent a USR2, Unicorn will suffix its pidfile with .oldbin and
# immediately start loading up a new version of itself (loaded with a new
# version of our app). When this new Unicorn is completely loaded
# it will begin spawning workers. The first worker spawned will check to
# see if an .oldbin pidfile exists. If so, this means we've just booted up
# a new Unicorn and need to tell the old one that it can now die. To do so
# we send it a QUIT.
#
# Using this method we get 0 downtime deploys.
# kill -USR2 `log/yourappname.pid`
old_pid = "/var/run/yourcompany/#{name}.pid.oldbin"
if File.exists?(old_pid) && server.pid != old_pid
begin
Process.kill("QUIT", File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
# someone else did our job for us
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems