Scaling down

place.rb

def ddg_info
  @ddg_info ||= Rails.cache.fetch("places/#{id}-#{updated_at}/ddg_info", expires_in: 3.days) do
    data = DDG.zeroClickInfo(name)
  end
end

places.html.slim

javascript:
  $(document).ready(function() {
    $("#ddg_info").load("/places/#{@place.slug}/ddg_info");

#ddg_info

places_controller.rb

def ddg_info
  @place = Place.visible.find(params[:id])
  respond_with @place do |f|
    f.html { render partial: "ddg_info" }
  end
end

routes.rb

resources :places do
  member do
    get 'ddg_info'
  end
end

unicorn.rb

worker_processes 3
timeout 30
preload_app true
port = ENV["PORT"].to_i
listen port, tcp_nopush: false

before_fork do |server, worker|
  if defined?(ActiveRecord::Base)
    ActiveRecord::Base.connection.disconnect!
    Rails.logger.info('Disconnected from ActiveRecord')
  end
  
  sleep 1
end

after_fork do |server, worker|
  if defined?(ActiveRecord::Base)
    ActiveRecord::Base.establish_connection
    Rails.logger.info('Connected to ActiveRecord')
  end
  
  if defined?(ActiveSupport::Cache::DalliStore) && Rails.cache.is_a?(ActiveSupport::Cache::DalliStore)
    # Reset Rails's object cache
    # Only works with DalliStore
    Rails.cache.reset

    # Reset Rails's session store
    # If you know a cleaner way to find the session store instance, please let me know
    ObjectSpace.each_object(ActionDispatch::Session::DalliStore) { |obj| obj.reset }
  end
end

worker.rb

def work(interval = 5.0, &block)
  interval = Float(interval)
  $0 = "resque: Starting"
  startup

  loop do
    break if shutdown?

    pause if should_pause?

    if job = reserve(interval)
      log "got: #{job.inspect}"
      job.worker = self
      run_hook :before_fork, job
      working_on job

      if @child = fork
        srand # Reseeding
        procline "Forked #{@child} at #{Time.now.to_i}"
        Process.wait(@child)
      else
        procline "Processing #{job.queue} since #{Time.now.to_i}"
        perform(job, &block)
        exit! unless @cant_fork
      end

      done_working
      @child = nil
    else
      break if interval.zero?
      log! "Timed out after #{interval} seconds"
      procline paused? ? "Paused" : "Waiting for #{@queues.join(',')}"
    end
  end

ensure
  unregister_worker
end