Async Rails Config

rails_config.rb

bechmark with apache bench:
ab -c 10 -n 20 http://127.0.0.1:8090/chat

install async active record mysql adapater
git clone git://github.com/igrigorik/em-mysqlplus.git
git checkout activerecord
rake install

# database.yml
development:
  adapter: em_mysqlplus
  database: widgets
  pool: 5
  timeout: 5000

# environment.rb
require 'em-activerecord'
require 'rack/fiber_pool'

# Run each request in a Fiber
config.middleware.use Rack::FiberPool
config.threadsafe!