Prose\UsingRedis::connect PHP Method

    public function connect($dsn)
    {
        // what are we doing?
        $log = usingLog()->startAction("connect to Redis server '{$dsn}'");
        // make the connection
        try {
            $conn = new PredisClient($dsn);
        } catch (Exception $e) {
            $log->endAction("connection failed: " . $e->getMessage());
            throw new E5xx_ActionFailed(__METHOD__);
        }
        // if we get here, all is good
        // all done
        $log->endAction("connected");
        return $conn;
    }