ruby on rails 3 - procfile for heroku and development -

ruby on rails 3 - procfile for heroku and development -

i little confused on usage of procfile on development in local machine , in heroku

in order start rails in local machine need

web: bundle exec rails server -p $port worker: bundle exec rake jobs:work

which works when utilize foreman

but heroku runs

bundle exec lean start -r config.ru -e production -p 48378

what write in procfile fine local machine , heroku?

ruby-on-rails-3 heroku foreman procfile