cosmos changefeeder

Question 1

Monitored container

Answer 1

has the data from which the change feed is generated. Any inserts and updates to the monitored container are reflected in the change feed of the container.

Question 2

Lease container

Answer 2

acts as a state storage and coordinates processing the change feed across multiple workers. The lease container can be stored in the same account as the monitored container or in a separate account.

Question 3

Delegate

Answer 3

is the code that defines what you, the developer, want to do with each batch of changes that the change feed processor reads.

Question 4

Compute instance

Answer 4

A compute instance hosts the change feed processor to listen for changes. Depending on the platform, it could be represented by a VM, a kubernetes pod, an Azure App Service instance, an actual physical machine. It has a unique identifier referenced as the instance name throughout this article.