malkusch\lock\mutex\RedisMutex::add PHP Method

Sets the key only if such key doesn't exist at the server yet.

abstract protected add ( mixed $redisAPI, string $key, string $value, integer $expire ) : boolean
$redisAPI	mixed	The connected Redis API.
$key	string	The key.
$value	string	The value.
$expire	integer	The TTL seconds.
return	boolean	True, if the key was set.

    protected abstract function add($redisAPI, $key, $value, $expire);

RedisMutex