Ruby開發：Sinatra+ActiveRecord+MySQL

如果擔心Rails的ActionPack封裝太厲害而影響效能，可以考慮使用更輕量的Sinatra.

以下代碼展示如何使用Sinatra+ActiveRecord+MySQL：

require 'sinatra'require 'active_record'require 'mysql2'

#ConnetctionActiveRecord::Base.establish_connection(  adapter:  'mysql2',  host:     'localhost',  database: 'my_db',  username: 'root',  password: 'root')

#Modelclass Account < ActiveRecord::Baseend

#Sinatra Routeget '/hi' do  puts Account.find :all  "Hello World!"end

Ruby下另外幾個web架構：

Sinatra：http://www.sinatrarb.com/intro-zh.html

Padrino：http://www.padrinorb.com/

Goliath：http://postrank-labs.github.io/goliath/