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2025-02-09
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Redis原理

# Redis原理篇

# 1、原理篇-Redis数据结构

# 1.1 Redis数据结构-动态字符串

我们都知道Redis中保存的Key是字符串,value往往是字符串或者字符串的集合。可见字符串是Redis中最常用的一种数据结构。

不过Redis没有直接使用C语言中的字符串,因为C语言字符串存在很多问题: 获取字符串长度的需要通过运算 非二进制安全 不可修改 Redis构建了一种新的字符串结构,称为简单动态字符串(Simple Dynamic String),简称SDS。 例如,我们执行命令:

上次更新: 2025/3/31 10:53:59
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