A sample application from Memcached as a Service for Cloud Fondry

counter.rb

require 'sinatra'
require 'dalli'
require 'json'


get '/count' do
  res = ''
  services = JSON.parse(ENV['VCAP_SERVICES'])
  credentials = services["memcached-1.4.10"].first["credentials"]
  host = credentials['host']
  port = credentials['port'].to_s

  hostname = host + ":" + port

  dc = Dalli::Client.new(hostname)
  cnt = dc.get("cnt")

  if cnt
    dc.cas("cnt", 1) {|c| dc.set("cnt", c+1) }
  else
    dc.set("cnt", 1)
  end

  res << credentials.to_s
  res << '<font size="128">' + cnt.to_s + '</font>'
end