Connector/BacklogService/Storage/DatabaseBacklogServiceStorage.php
public function enqueue(CommandInterface $command)
    {
        $serializedCommand = serialize($command);
        $hash = md5($serializedCommand);

        if ($this->entryExists($hash)) {
            return;
        }

        $this->connection->insert($this->table, [
            'payload' => $serializedCommand,
            'hash' => $hash,
            'priority' => $command->getPriority(),
            'time' => (new DateTime('now'))->format(DATE_W3C),
            'status' => BacklogService::STATUS_OPEN,
        ]);
    }
public function enqueue(CommandInterface $command)
    {
        $serializedCommand = serialize($command);
        $hash = md5($serializedCommand);

        if ($this->entryExists($hash)) {
            return;
        }

        $this->connection->insert($this->table, [
            'payload' => $serializedCommand,
            'hash' => $hash,
            'priority' => $command->getPriority(),
            'time' => (new DateTime('now'))->format(DATE_W3C),
            'status' => BacklogService::STATUS_OPEN,
        ]);
    }
{@inheritdoc}