Redis官网——如何利用Redis做服务器集群的分布式锁

链接：http://redis.io/topics/distlock

原理很简单，一段时间内轮询加锁的key

重点，不同语言的开源实现

Before describing the algorithm, here are a few links to implementations already available that can be used for reference.

• Redlock-rb (Ruby 实现). There is also a fork of Redlock-rb that adds a gem for easy distribution and perhaps more.

• Redlock-py (Python 实现).

• Redlock-php (PHP 实现).

• Redsync.go (Go 实现).

• Redisson (Java 实现).

• Redis::DistLock (Perl 实现).

• Redlock-cpp (C++ 实现).

• Redlock-cs (C#/.NET 实现).

• node-redlock (NodeJS 实现). Includes support for lock extension.