src/RedisQueue.php
protected function addJobToRetrySet($job, $retryAt)
    {
        return (bool)$this->client->zadd(
            $this->getRetryZsetNameWithPrefix($job->getQueue()),
            $retryAt,
            serialize($job)
        );
    }
protected function addJobToRetrySet($job, $retryAt)
    {
        return (bool)$this->client->zadd(
            $this->getRetryZsetNameWithPrefix($job->getQueue()),
            $retryAt,
            serialize($job)
        );
    }
protected function addJobToRetrySet ( $ job , $ retryAt ) { return ( bool ) $ this -> client -> zadd ( $ this -> getRetryZsetNameWithPrefix ( $ job -> getQueue ( ) ) , $ retryAt , serialize ( $ job ) ) ; }
add job to the retry set
@param AbstractJob $job
@param int $retryAt
@return bool
add job to the retry set