Railsで排他制御 - Qiita

module Lockable extend ActiveSupport::Concern class UnableLockError < StandardError; end KEY_PREFIX = 'lock/' def with_lock(key, expire = 30.seconds) real_key = "#{KEY_PREFIX}#{key}" value = SecureRandom.hex(10) raise UnableLockError unless lock(real_key, value, expire) begin yield ensure unlock(real_key, value) end end private def lock(key, value, expire) redis_client.set(key, value, ex: expire,