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【DesignMode】享元模式(Flyweight Pattern)
2022-07-07 14:16:00 【weixin_43224306】
基本介绍
享元模式(Flyweight Pattern) 也叫 蝇量模式: 运用共享技术有效地支持大量细粒度的对象
常用于系统底层开发,解决系统的性能问题。像数据库连接池,里面都是创建好的连接对象,在这些连接对象中有我们需要的则直接拿来用,避免重新创建,如果没有我们需要的,则创建一个
享元模式能够解决重复对象的内存浪费的问题,当系统中有大量相似对象,需要缓冲池时。不需总是创建新对象,可以从缓冲池里拿。这样可以降低系统内存,同时提高效率
享元模式经典的应用场景就是池技术了,String 常量池、数据库连接池、缓冲池等等都是享元模式的应用,享元模式是池技术的重要实现方式
1. 展示网站项目需求
小型的外包项目,给客户 A 做一个产品展示网站,客户 A 的朋友感觉效果不错,也希望做这样的产品展示网站,但是要求都有些不同:
有客户要求以新闻的形式发布
有客户人要求以博客的形式发布
有客户希望以微信公众号的形式发布
2. 传统方案解决网站展现项目
直接复制粘贴一份,然后根据客户不同要求,进行定制修改
给每个网站租用一个空间
方案设计示意图
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