unicorn

config.ru

# This file is used by Rack-based servers to start the application.

$stdout.sync = true


require 'unicorn/worker_killer'

##
## Maximum Requests
##

max_request_min =  500
max_request_max =  600

# Max requests per worker
use Unicorn::WorkerKiller::MaxRequests, max_request_min, max_request_max



##
## Maximum Memory
##

oom_min = (1024**2) * (ENV['WORKER_MEMORY'] || 340).to_i
oom_max = (1024**2) * (ENV['WORKER_MEMORY'] || 340).to_i + 25

# Max memory size (RSS) per worker
use Unicorn::WorkerKiller::Oom, oom_min, oom_max



##
## Blastoff
##

require ::File.expand_path('../config/environment',  __FILE__)
run DiscoveryEngine::Application

unicorn.rb

# amount of unicorn workers to spin up
worker_processes (ENV['WORKER_PROCESSES'] || 5).to_i

# restarts workers that timeout
timeout (ENV['WORKER_TIMEOUT'] || 15).to_i

preload_app true

before_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end

  ActiveRecord::Base.connection.disconnect!
end

after_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn worker intercepting TERM. Wait for master to send QUIT'
  end

  Sidekiq.configure_client do |config|
    config.redis = { size: 1 }
  end

  ActiveRecord::Base.configurations[Rails.env].tap do |config|
    config['reaping_frequency'] = ENV['DB_REAP_FREQ'] || 10 # seconds
    config['pool']              = ENV['DB_POOL'] || 2

    ActiveRecord::Base.establish_connection(config)
  end
end