In order to provide more transparency into your data flow progression, we've introduced a way for you view your outgoing traffic backlog.
From the overview page, you can access a column on the connector list that shows a number that represents the size of the outgoing backlog. This backlog size is represented represents the following numbers:
You can also see the backlog trend in the form of a rising or falling arrow or a steady line. This trend illustrates the changes in the backlog over the last hour. This icon is displayed as follows:
Furthermore, you can now view the backlog for individual connectors from the connector overview screen, which will specifically show that connector's outgoing backlog over the last few hours.
You can learn more about this in the documentation for outgoing backlogs