Unicorn with Rails on Heroku (Cedar stack) - Qiita

worker_processes 3 timeout 30 preload_app true before_fork do |server, worker| # Replace with MongoDB or whatever if defined?(ActiveRecord::Base) ActiveRecord::Base.connection.disconnect! Rails.logger.info('Disconnected from ActiveRecord') end # If you are using Redis but not Resque, change this if defined?(Resque) Resque.redis.quit Rails.logger.info('Disconnected from Redis') end sleep 1 end afte