Ruby server timeout 確認
# webrick
RACK_ENV=production bundle exec rackup -s webrick -p 8000
# puma
RACK_ENV=production bundle exec rackup -s puma -p 8000
# unicorn
RACK_ENV=production bundle exec unicorn -p 8000
# thin
RACK_ENV=production bundle exec rackup -s thin -p 8000
# falcon
RACK_ENV=production bundle exec rackup -s # falcon -p 8000
# passenger
RACK_ENV=production bundle exec passenger start -p 8000
curl http://127.0.0.1:8000/sleep