Redlock is a redis-based distributed lock implementation in Ruby.

Distributed locks are a very useful primitive in many environments where different processes require to operate with shared resources in a mutually exclusive way.There are a number of libraries and blog posts describing how to implement a DLM (Distributed Lock Manager) with Redis, but every library uses a different approach, and many use a simple approach with lower guarantees compared to what can be achieved with slightly more complex designs.This is an implementation of a proposed distributed lock algorithm with Redis. It started as a fork from antirez implementation.