Run Background Process in Sinatra

run_long_process_in_background.rb

require 'sinatra'

get '/long_process' do
  
  child_pid = Process.fork do
    # hard work is done here...
    sleep 10
    Process.exit
  end
  
  Process.detach child_pid # No zombie process
  
  'Doing hard work in the background...'
end