Context

Best practice is to use context.Background when closing a cursor to make sure the server-side resources get cleaned up, unless there is a specific reason why timing out on the client-side is more important than cleaning up cursors on the server-side. We should update our documentation to use that pattern and add a note about the tradeoff.

Inspired by this forum post.

Definition of done

• Update all examples in the mongo-go-driver repo to use context.Background when calling cursor.Close.
  • Add a comment that describes why it's best to use context.Background and describes the tradeoff.
• Create a DOCSP ticket to update all doc site examples to use context.Background when calling cursor.Close.

Pitfalls

What should the implementer watch out for? What are the risks?