Redis的set命令是原子操作吗? [英] Is Redis' set command an atomic operation?

问题描述

我正在尝试使用Redis的set命令实现最简单的分布式锁组件，但是我无法通过官方文档找到关于原子性的确切依据，Redis的SET key value [EX seconds] [PX milliseconds] [NX|XX]命令是原子操作吗?

I'm trying to use Redis' set command to implement a simplest distributed lock component, but I can't find any exact basis about atomicity through the official document, is Redis' SET key value [EX seconds] [PX milliseconds] [NX|XX] command an atomic operation?

推荐答案

是.核心是单线程的，因此什么都不会运行，直到SET完成为止.使得SET {key} {value} EX {expiry} NX非常适合简单锁定.

Yes. The core is single threaded, so nothing will run until the SET has completed; that makes SET {key} {value} EX {expiry} NX ideal for simple locking.

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