puma config

config - puma.rb

# config/puma.rb
threads Integer(ENV['MIN_THREADS'] || 1), Integer(ENV['MAX_THREADS'] || 6)
workers Integer(ENV['WORKERS'] || 2)

port ENV['PORT'] || 3000
environment ENV['RAILS_ENV'] || 'development'

preload_app!

on_worker_boot do
  require "active_record"
  cwd = File.dirname(__FILE__)+"/.."
  ActiveRecord::Base.connection.disconnect! rescue ActiveRecord::ConnectionNotEstablished
  ActiveRecord::Base.establish_connection(ENV["DATABASE_URL"] || YAML.load_file("#{cwd}/config/database.yml")[ENV["RAILS_ENV"]])
end