软件简介

Merb_piece_cache 是一个小型的Ruby库，用以提供给 Merb 框架来缓存
HTML 片段。

示例代码：

    <!-- rendered every time (because never cached) -->  
    <% if @user %>  
      Hello <%=h @user %>!  
    <% else %>  
      <a href="/login">Login</a>  
    <% end %>

    <!-- rendered only when cache is expired or not found -->  
    <% lifetime = 5*60  # sec, default is nil(=infinity) %>  
    <% cache_with("members/index", lifetime) do %>  
      <ul>  
      <% for member in @members %>  
        <li><%=h @member.name %></li>  
      <% end %>  
      <ul>  
    <% end %>