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13 lines
325 B
13 lines
325 B
3 years ago
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## 介绍
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单例模式主要解决的是，一个全局使用的类频繁的创建和消费，从而提升整体的代码性能
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+ 数据库连接池
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+ spring bean单例
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+ 代码中的全局属性保存
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## 代码例子
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内部类单例
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![[Snipaste_2023-02-12_13-54-33.png]]
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枚举单例
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![[Snipaste_2023-02-12_13-54-57.png]]
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