自己抽空写了个带cache的ActiveRecord

 

1. 首先写了个cache的module Cache

     def put(object)
       pre
       @@cache[object.id] = object
     end
     
     def delete(id)
       pre
       @@cache.delete(id)
     end
     
     def get(id)
       pre
       @@cache[id]
     end
     
     def load
       pre
       @@cache
     end
     
     def destroy
       @@cache = []
     end
     
     def pre
       @@cache ||=find(:all)
     end
   
     def refresh
       @@cache = find(:all)
     end
   end
   

    
2. ActiveRecord引用之require 'cache'

   class Product < ActiveRecord::Base
     extend Cache
     belongs_to :company
   end
   

    
3. 使用范例class IndexController < ApplicationController

     def index
       @products = Product.load
       @products
     end
   end