Locking between multiple Ruby processes by Redis

redis_lock.rb

class Lock
  def initialize(redis:, key:)
    @redis = redis
    @key = key
  end

  def lock(timeout_sec: 10)
    start = Time.now.to_i
    loop do
      break yield if @redis.setnx(@key, true)
      raise Timeout::Error if (Time.now.to_i - start) >= timeout_sec
      sleep 0.001 # 1ms
    end
  ensure
    @redis.del(@key)
  end
end

hoge_lock = Lock.new(redis: Redis.new, key: 'hoge')
hoge_lock.lock { puts 1 }